Adding reference to the "Mastering Go Web Services" book.
diff --git a/Books.md b/Books.md
index d4b034d..30f309f 100644
--- a/Books.md
+++ b/Books.md
@@ -47,6 +47,12 @@
     * ISBN: 978-0992461294
     * Reference: https://learnable.com/books/level-up-your-web-apps-with-go
 
+  * **Mastering Go Web Services**
+    * Author: Nathan Kozyra
+    * Publication Date: April, 2015
+    * ISBN: 9781783981304
+    * Reference: https://www.packtpub.com/web-development/mastering-go-web-services
+
 ## Early Access
 
   * **Go In Action**