APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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