Gargiulo, Terrence L., 1968-
American Management Association, 2008
eBooks
Chandra Lekha Sriram
Routledge, 2009.
Buku Teks
Endang Mariani Rahayu
2016
UI - Disertasi Membership
Hepner, Harry W.
Prentice-Hall, 1961
Buku Teks
Given, William B.
Harper & Brothers Publishers, 1949
Buku Teks