APA (7th ed.) Citation

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 (9th ed.) Citation

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