APA (7th ed.) Citation

Cruz, R. G. (2009). Principles of travel and tourism: Introduction to tourism theory. Tourism Research Philippines.

Chicago Style (17th ed.) Citation

Cruz, Reil G. Principles of Travel and Tourism: Introduction to Tourism Theory. Quezon City: Tourism Research Philippines, 2009.

MLA (9th ed.) Citation

Cruz, Reil G. Principles of Travel and Tourism: Introduction to Tourism Theory. Tourism Research Philippines, 2009.

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