Archer, Dale, author
Avery, 2015
Buku Teks
Rubel, Paula G.
Australian National University Press, 1978
Buku Teks
Katcher, Bruce Leslie, author
American Management Association, 2007
eBooks
Zelicoff, Alan P., author
American Management Association;, 2008
eBooks
Nomi, Toshikata, author
Mizan Media utama, 2017
Buku Teks