Cespedes, Frank V.
Harvard Business School Press, 1995
Buku Teks
Schwartz, Matthew, author
American Management Association, 2006
eBooks
Micky Mintarsyah, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2008
UI - Tesis (Open)
Sirait, Febriela, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2012
UI - Skripsi (Open)
Desty Ariaini, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2006
UI - Tesis (Membership)