Cruz, Z. L. (2013). Principles of tourism. Rex Book Store.
Chicago Style (17th ed.) CitationCruz, Zenaida Lansangan. Principles of Tourism. Manila: Rex Book Store, 2013.
MLA引文Cruz, Zenaida Lansangan. Principles of Tourism. Rex Book Store, 2013.
警告:這些引文格式不一定是100%准確.