diff --git a/zh/ref.md b/zh/ref.md
index 61fe8a46..ac3ac8d3 100644
--- a/zh/ref.md
+++ b/zh/ref.md
@@ -11,4 +11,5 @@
 7. [Network programming with Go](http://jan.newmarch.name/go/)
 8. [setup-the-rails-application-for-internationalization](http://guides.rubyonrails.org/i18n.html#setup-the-rails-application-for-internationalization)
 9. [The Cross-Site Scripting (XSS) FAQ](http://www.cgisecurity.com/xss-faq.html)
-10. [Network programming with Go](http://jan.newmarch.name/go)
\ No newline at end of file
+10. [Network programming with Go](http://jan.newmarch.name/go)
+11. [RESTFul](http://www.ruanyifeng.com/blog/2011/09/restful.html)