APA (7th ed.) Citation

Cruz, Z. L. (1991). Principles of tourism. Rex Book Store.

Chicago Style (17th ed.) Citation

Cruz, Zenaida L. Principles of Tourism. Manila: Rex Book Store, 1991.

MLA (9th ed.) Citation

Cruz, Zenaida L. Principles of Tourism. Rex Book Store, 1991.

Warning: These citations may not always be 100% accurate.