Salvatore, Dominick, author
Salemba Empat, 2005
Buku Teks
Scott, Gini Graham, author
American Management Association, 2008
eBooks
Singgih Widigdya, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2017
UI - Skripsi Membership
Pankaj Ghemawat
The Free Press, 1991
Buku Teks
Cyert, Richard M., author
Prentice-Hall, 1965
Buku Teks