Rasiel, Ethan M
McGraw-Hill, 1999
Buku Teks
Briney, Kristin, author
Pelagic Publishing, 2015
Buku Teks
Nomi, Toshikata, author
Mizan Media utama, 2017
Buku Teks
Livoti, Carol, author
American Management Association, 2009
eBooks
Kaplan, Robert S., author
Harvard Business Review Press, 2015
Buku Teks