APA引文

Cruz, Z. L. (1999). Principles and ethics of tour guiding. Rex Book Store.

Chicago Style (17th ed.) Citation

Cruz, Zenaida Lansangan. Principles and Ethics of Tour Guiding. Manila: Rex Book Store, 1999.

MLA引文

Cruz, Zenaida Lansangan. Principles and Ethics of Tour Guiding. Rex Book Store, 1999.