diff --git a/References.txt b/References.txt
index d1be418..2a5e22c 100644
--- a/References.txt
+++ b/References.txt
@@ -231,4 +231,7 @@ This reference details how to export data to an Excel spreadsheet using C#.
 http://sourceforge.net/projects/itextsharp/
 
 This is a .NET library for exporting data to a PDF file.
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+Suggestion by Ammara Sohaib
+references:www.w3schools.com
+www.youtube.com/github
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