Wildermuth, J.R., author
Ecole Hotellere, 1980
Buku Teks
Tricia Lelonowati Sumarjanto, author
2001
UI - Tesis (Membership)
Herdipta Dhira Prasanti, author
Universitas Indonesia, 2015
UI - Skripsi (Membership)
Artikel Jurnal
Devy Saviatry Nazahar, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1985
UI - Skripsi (Membership)