diff --git a/app/src/main/java/com/example/objectionapp/Schema.kt b/app/src/main/java/com/example/objectionapp/Schema.kt
index a92035f..4b22ebe 100644
--- a/app/src/main/java/com/example/objectionapp/Schema.kt
+++ b/app/src/main/java/com/example/objectionapp/Schema.kt
@@ -74,7 +74,7 @@ private fun getItemSchema(
         PrimitiveKind.FLOAT -> ItemSchema.NumberSchema
         PrimitiveKind.INT -> ItemSchema.NumberSchema
         PrimitiveKind.BOOLEAN -> ItemSchema.BooleanSchema
-        StructureKind.LIST -> getListSchema(descriptor)
+        StructureKind.LIST -> getListSchema(descriptor, annotations)
         PolymorphicKind.SEALED -> getSealedSchema(descriptor)
         SerialKind.ENUM -> throw Exception(
             "Use a sealed class with objects instead of an enum. Failed at: $descriptor"
@@ -125,9 +125,14 @@ private fun getSealedSchema(rootDescriptor: SerialDescriptor): ItemSchema.EnumSc
 
         variants.add(
             EnumVariantSchema(
-                name = variant.serialName, description = getDescription(variantAnnotations),
+                name = variant.serialName,
+                description = getDescription(variantAnnotations),
                 type = if (variant.kind == StructureKind.OBJECT) null
-                else getItemSchema(if (contentKey == null) variant else extractContentKey(contentKey, variant))
+                else getItemSchema(
+                    if (contentKey == null) variant else extractContentKey(
+                        contentKey, variant
+                    )
+                )
             )
         )
     }
@@ -151,11 +156,29 @@ private fun extractContentKey(contentKey: String, descriptor: SerialDescriptor):
 }
 
 @OptIn(ExperimentalSerializationApi::class)
-private fun getListSchema(descriptor: SerialDescriptor): ItemSchema {
+private fun getListSchema(descriptor: SerialDescriptor, annotations: List<Annotation>): ItemSchema {
     if (descriptor.elementsCount != 1) {
         throw Exception("A list must have exactly on child element")
     }
 
+    for (annotation in annotations) {
+        when (annotation) {
+            is ObjectReference -> return ItemSchema.ListSchema(
+                item = ItemSchema.ReferenceSchema(
+                    expectedTopLevelVariant = serialDescriptor(
+                        annotation.expectedTopLevelVariant.createType()
+                    ).serialName
+                )
+            )
+
+            is AnyObjectReference -> return ItemSchema.ListSchema(
+                item = ItemSchema.ReferenceSchema(
+                    expectedTopLevelVariant = null
+                )
+            )
+        }
+    }
+
     return ItemSchema.ListSchema(item = getItemSchema(descriptor.getElementDescriptor(0)))
 }
 
@@ -280,7 +303,8 @@ sealed class ItemSchema {
     @Serializable
     @SerialName("list")
     data class ListSchema(val item: ItemSchema) : ItemSchema() {
-        @SerialName("batch_size") val batchSize = 50
+        @SerialName("batch_size")
+        val batchSize = 50
     }
 
     @Serializable
diff --git a/app/src/main/java/com/example/objectionapp/View.kt b/app/src/main/java/com/example/objectionapp/View.kt
index 3f73904..aeefb86 100644
--- a/app/src/main/java/com/example/objectionapp/View.kt
+++ b/app/src/main/java/com/example/objectionapp/View.kt
@@ -48,7 +48,7 @@ sealed class FormActionStyle {
 @JsonClassDiscriminator("$")
 @Serializable
 data class Link(
-	val pageId: String,
+	@ObjectReference(Object.Page::class) val pageId: String,
 	val useSheet: Boolean = false
 )
 
@@ -175,20 +175,20 @@ sealed class CardContainer {
 	@Serializable
 	@SerialName("SingularCardContainer")
 	data class SingularCardContainer(
-		val objectId: String,
+		@ObjectReference(Object.Page::class) val objectId: String,
 	) : CardContainer()
 
 	@Serializable
 	@SerialName("PluralCardContainer")
 	data class PluralCardContainer(
-		val objectIds: List<String>,
+		@ObjectReference(Object.Page::class) val objectIds: List<String>,
 		val title: String? = null,
 	) : CardContainer()
 
 	@Serializable
 	@SerialName("CustomCardContainer")
 	data class CustomCardContainer(
-		val objectId: String? = null,
+		@ObjectReference(Object.Page::class) val objectId: String? = null,
 		val title: String? = null,
 		val icon: String? = null,
 		val imageUrl: String? = null
diff --git a/schema.json b/schema.json
index dadab6a..9614c11 100644
--- a/schema.json
+++ b/schema.json
@@ -153,7 +153,8 @@
 																					"type": {
 																						"$": "optional",
 																						"child": {
-																							"$": "string"
+																							"$": "reference",
+																							"expected_top_level_variant": "Page"
 																						}
 																					}
 																				},
@@ -202,7 +203,8 @@
 																					"type": {
 																						"$": "list",
 																						"item": {
-																							"$": "string"
+																							"$": "reference",
+																							"expected_top_level_variant": "Page"
 																						},
 																						"batch_size": 50
 																					}
@@ -230,7 +232,8 @@
 																					"name": "objectId",
 																					"description": null,
 																					"type": {
-																						"$": "string"
+																						"$": "reference",
+																						"expected_top_level_variant": "Page"
 																					}
 																				}
 																			]
@@ -423,7 +426,8 @@
 																								"name": "pageId",
 																								"description": null,
 																								"type": {
-																									"$": "string"
+																									"$": "reference",
+																									"expected_top_level_variant": "Page"
 																								}
 																							},
 																							{
@@ -467,7 +471,8 @@
 																									"name": "pageId",
 																									"description": null,
 																									"type": {
-																										"$": "string"
+																										"$": "reference",
+																										"expected_top_level_variant": "Page"
 																									}
 																								},
 																								{