Gaya APA
Dukas, P. (1974).
Hotel front office management and operation (3rd ed).
Dubuque, Iowa:
WM. C. Brown Company Publishers.
Gaya MLA
Dukas, Peter.
"Hotel front office management and operation".
3rd ed
Dubuque, Iowa:
WM. C. Brown Company Publishers,
1974.
BUKU.