Coffmann, C. Dewitt
The Educational Institute of the American Hotel Motel Association, 1980
Buku Teks
Arnadi Gunawan
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2001
UI - Tesis (Membership)
McDonough, Brian
Wiley, 2001
Buku Teks
Bambang Pratama
1991
UI - Tesis (Membership)
Gina Hendiana
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1997
UI - Tesis (Membership)