Murphy, Martin
No more pointless meetings: breakthrough sessions that will revolutionize the way you work
[American Management Association, ], 2013
 eBooks
Hamill, Pete
Forever
Little, Brown and Company, 2003
 Buku Teks
Mangieri, John N.
Power Thinking: how the way you think can change the way you lead
John Wiley & Sons, Inc, 2004
 Buku Teks
Steel, Danielle
Friends forever
Corgi, 2013
 Buku Teks
Stephani Zeni
A week to forever
Gramedia Pustaka Utama , 2014
 Buku Teks