Angelo, Rocco M.,
Educational Institute, 1998
Buku Teks
Coffmann, C. Dewitt
The Educational Institute of the American Hotel Motel Association, 1980
Buku Teks
Arnadi Gunawan, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2001
UI - Tesis Membership
McDonough, Brian, author
Wiley, 2001
Buku Teks
Gina Hendiana, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1997
UI - Tesis Membership