diff --git a/examples/src/UdpMulticastHttpExamples/HttpWebPageSource.java b/examples/src/UdpMulticastHttpExamples/HttpWebPageSource.java
index 073cf36248e082c9be17212e5d2e96960edad419..06f965a7fa8420594cf262d4849435fe4f43caab 100644
--- a/examples/src/UdpMulticastHttpExamples/HttpWebPageSource.java
+++ b/examples/src/UdpMulticastHttpExamples/HttpWebPageSource.java
@@ -22,6 +22,7 @@ public class HttpWebPageSource {
            System.out.println("HttpWebPageSource: create http connection and retrieve default page");
            System.out.println("Reference:  https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol");
            System.out.println("Reference:  https://tools.ietf.org/html/rfc7230");
+           System.out.println("Reference:  https://en.wikipedia.org/wiki/CURL");
            System.out.println();
            
            // We request an IP to connect to a web server running on default http port 80.