diff --git a/lib/msmq.js b/lib/msmq.js
index 38224b1..c5e6cb0 100644
--- a/lib/msmq.js
+++ b/lib/msmq.js
@@ -1,5 +1,9 @@
 ////////////////////////////////////////////////////////////////////////
 // MSMQ(Microsoft Message Queuing) API
+//
+// references:
+//   - https://gist.github.com/vladaman/6375841
+//
 ////////////////////////////////////////////////////////////////////////
 
 var MSMQObject = function(queueName) {