Rotzoll, Kim B.
South-Western Publishing Co., 1986
Buku Teks
Taufik Akbar, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2014
UI - Tesis (Membership)
Liena Desbi Fryandika, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Brown, Paul B., author
Newton Abbot : David & Charles, distributor, 2006
Buku Teks
Alison Alexander, Jarice Hanson, editor
McGraw-Hill/Dushkin, 2001
Buku Teks