Johnson, George
Julian Messner, 1969
Buku Teks
Dani Priyono, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1996
UI - Skripsi (Membership)
Kuther, Tara L., editor
Thomson, 2006
Buku Teks
Cagle, Ronald B., author
[American Management Association, ], 2005
eBooks
Pantry, Sheila, author
Facet Publishing, 2003
Buku Teks