Wolf, Thomas, author
A fireside Book, 1990
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Harper, 1990
Buku Teks
Upshur, Carole C., author
Prentice-Hall, 1982
Buku Teks
Dinda Putri Hapsari, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2014
UI - Tesis (Membership)
Foster, Douglas
Longman, 1972
Buku Teks