Gaya APA
Daschler, J, P., Ninemeier, J, D. (1984).
Supervision In The Hospitality Industry (Cetakan I).
United States Of America:
The Educational Institute Of The American Hotel & Motel Association.
Gaya MLA
Daschler, John, P.., Ninemeier, Jack, D..
"Supervision In The Hospitality Industry".
Cetakan I
United States Of America:
The Educational Institute Of The American Hotel & Motel Association,
1984.
.