Steward, Julian H.
McGraw-Hill, 1959
Buku Teks
Zikmund, Miroslav
Artia, 1963
Buku Teks
Collier, John, 1884-1968
New American Library, 1947
Buku Teks
Lisa Tanugraha
Universitas Indonesia, 1997
UI - Tesis (Membership)
Dubelaar, C.N.
Foris Publications, 1986
Buku Teks