diff --git a/README.md b/README.md
index 6158a4c..03e01a0 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ University documents that I have collected from IU
 Fact: you do not need to do all of these, choose the one best fit for you must be ideal! ☠️
 Link: 
 - Scribd: https://www.scribd.com/user/662428313/Duy-Do-Minh
-- Studocu: ...
+- Studocu: https://www.studocu.com/vn/user/20773621
 
 > Chemistry for engineers:
 - Darrell Ebbing, Steven D. Gammon - General Chemistry, 9th Edition   (2007, Houghton Mifflin) - libgen.lc