Gaya APA

Association, A, H, &, M. (1984). Human relations/supervisory development I : student certification manual . Michigan: The Educational Institute of the American Hotel & Motel Association.

Gaya MLA

Association, American, Hotel, &, Motel. "Human relations/supervisory development I : student certification manual". Michigan: The Educational Institute of the American Hotel & Motel Association, 1984. BUKU.