Cruz, R. G. (1998). Principles of travel and tourism: With special reference to the Philippines. Tourism Research Philippines].
Citace podle Chicago (17th ed.)Cruz, Reil G. Principles of Travel and Tourism: With Special Reference to the Philippines. [Quezon City: Tourism Research Philippines], 1998.
Citace podle MLA (9th ed.)Cruz, Reil G. Principles of Travel and Tourism: With Special Reference to the Philippines. Tourism Research Philippines], 1998.
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