Gaya APA
CHA, D, A, B, S. (2008).
FRONT OFFICE Operation (Secret Receptionist Skills) for 5 Star Hotels (.).
Yogyakarta:
ANDI.
Gaya MLA
CHA, Drs., A., Bambang, Sujatno.
"FRONT OFFICE Operation (Secret Receptionist Skills) for 5 Star Hotels".
.
Yogyakarta:
ANDI,
2008.
Text.