Umar S. Djojosarwono
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2001
UI - Tesis (Membership)
Anne T. Coughlan, Eric Anderson, Louis W. Stern, Adel El-Ansary
Prentice-Hall, 2001
Buku Teks
Rosenbloom, Bert
South Western Cengage Learning, 2012
Buku Teks
Stern, Louis W.
Prentice Hall Inc., 1982
Buku Teks
Fitri Adona
2001
UI - Tesis (Membership)