Vernon, Alexia
90 days 90 ways: onboard young professionals to peak performance
American Society for Training & Development, 2012
 eBooks
Nelson, Bob
1001 ways to reward employees
Workman Publishing Company, 1994
 Buku Teks
Baldoni, John, 1952-
Lead by example: 50 ways great leaders inspire results
American Management Association;, 2009
 eBooks
Nelson, Bob
1001 cara menghargai karyawan = 1001 ways to reward employees
Pustaka Delapratasa, 1999
 Buku Teks
Ostring, Pirkko
Profit-focused supplier management: how to identify risks and recognize opportunities
[American Management Association, ], 2004
 eBooks