Gaya APA
Sujatno, B., Suyantoro, F, S. (2008).
Front office operations : secret skills for five stars hotels .
Yogyakarta:
Andi Office.
Gaya MLA
Sujatno, Bambang., Suyantoro, Fl., Sigit.
"Front office operations : secret skills for five stars hotels".
Yogyakarta:
Andi Office,
2008.
BUKU.