diff --git a/16.create-an-Event-Emitter.md b/16.create-an-Event-Emitter.md
index 9bbc192..f743f56 100644
--- a/16.create-an-Event-Emitter.md
+++ b/16.create-an-Event-Emitter.md
@@ -173,3 +173,10 @@ Sure! Here are some real-world examples of how event emitters can be used in Jav
     * Sending notifications based on specific triggers.
     * Managing subscription and unsubscription of notification listeners.
 
+
+#
+
+### Reference
+
+[Facebook Event-Emitter](https://github.com/facebookarchive/emitter)
+