diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..780e6838
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.php text eol=lf
\ No newline at end of file
diff --git a/src/Easybill/ZUGFeRD/Model/Trade/Agreement.php b/src/Easybill/ZUGFeRD/Model/Trade/Agreement.php
index 0d30654d..34ddc0a7 100644
--- a/src/Easybill/ZUGFeRD/Model/Trade/Agreement.php
+++ b/src/Easybill/ZUGFeRD/Model/Trade/Agreement.php
@@ -7,6 +7,14 @@
 class Agreement
 {
 
+    /**
+     * @var string
+     * @Type("string")
+     * @XmlElement(cdata = false, namespace = "urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:12")
+     * @SerializedName("BuyerReference")
+     */
+    private $buyerReference;
+
     /**
      * @var TradeParty
      * @Type("Easybill\ZUGFeRD\Model\Trade\TradeParty")
@@ -23,6 +31,25 @@ class Agreement
      */
     private $buyer;
 
+    /**
+     * @return string
+     */
+    public function getBuyerReference()
+    {
+        return $this->name;
+    }
+
+    /**
+     * @param string $buyerReference
+     *
+     * @return self
+     */
+    public function setBuyerReference($buyerReference)
+    {
+        $this->buyerReference = $buyerReference;
+        return $this;
+    }
+
     /**
      * @return \Easybill\ZUGFeRD\Model\Trade\TradeParty
      */
diff --git a/src/Easybill/ZUGFeRD/Tests/BuilderTest.php b/src/Easybill/ZUGFeRD/Tests/BuilderTest.php
index 77be2ec4..bdc382fe 100644
--- a/src/Easybill/ZUGFeRD/Tests/BuilderTest.php
+++ b/src/Easybill/ZUGFeRD/Tests/BuilderTest.php
@@ -50,6 +50,7 @@ public function testGetXML()
   </rsm:HeaderExchangedDocument>
   <rsm:SpecifiedSupplyChainTradeTransaction>
     <ram:ApplicableSupplyChainTradeAgreement>
+      <ram:BuyerReference>AB-312</ram:BuyerReference>
       <ram:SellerTradeParty>
         <ram:Name>Lieferant GmbH</ram:Name>
         <ram:PostalTradeAddress>
@@ -216,6 +217,7 @@ public function testGetXML()
     private function setAgreement(\Easybill\ZUGFeRD\Model\Trade\Trade $trade)
     {
         $trade->getAgreement()
+            ->setBuyerReference('AB-312')
             ->setSeller(
                 new \Easybill\ZUGFeRD\Model\Trade\TradeParty('Lieferant GmbH',
                     new \Easybill\ZUGFeRD\Model\Address('80333', 'Lieferantenstraße 20', null, 'München', 'DE'),