Shim, Jae K., author
Alex Media Komputindo, 1993
Buku Teks
Oliver, Lianabel, author
American Management Association;, 2000
eBooks
Singgih Widigdya, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Skripsi Membership
Cokins, Gary, author
Wiley, 2001
Buku Teks
Axson, David A.J., author
John Wiley & Sons, 2007
Buku Teks