APA (7th ed.) Citation

YOETI, H. O. A. (1999). Hotel: Customer service. Pertja.

Chicago Style (17th ed.) Citation

YOETI, H. Oka A. Hotel: Customer Service. Jakarta: Pertja, 1999.

MLA (9th ed.) Citation

YOETI, H. Oka A. Hotel: Customer Service. Pertja, 1999.