Cruz, Z. L. (1991). Principles of tourism. Rex Book Store.
Chicagoスタイル(17版)引用形式Cruz, Zenaida L. Principles of Tourism. Manila: Rex Book Store, 1991.
MLA(9版)引用形式Cruz, Zenaida L. Principles of Tourism. Rex Book Store, 1991.
警告: この引用は必ずしも正確ではありません.
APA(7版)引用形式