books: gopl website and publication date
diff --git a/Books.md b/Books.md
index 5415b85..7a0ec8f 100644
--- a/Books.md
+++ b/Books.md
@@ -102,9 +102,9 @@
 
   * **The Go Programming Language (Addison-Wesley Professional Computing Series)**
     * Author: Brian W. Kernighan & Alan Donovan
-    * Publication Date: November 13, 2015
+    * Publication Date: October 30, 2015
     * ISBN: 978-0134190440
-    * Reference: http://www.informit.com/store/go-programming-language-9780134190440
+    * Reference: http://www.gopl.io/
 
 ## Available without Publication Date
 
@@ -315,4 +315,4 @@
     * Author: Sajarwo Anggai
     * Publication Date: October 21, 2013
     * ISBN: ---
-    * Reference: https://sajarwo87.wordpress.com/2013/10/21/buku-bahasa-pemrograman-go/
+    * Reference: https://sajarwo87.wordpress.com/2013/10/21/buku-bahasa-pemrograman-go/
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