Cruz, R. G. (2000). Principles of travel and tourism: Focus on the Philippines ver. 2. Tourism Research Philippines.
Čikaški stil citiranja (17. izdanje)Cruz, Reil G. Principles of Travel and Tourism: Focus on the Philippines Ver. 2. Quezon City: Tourism Research Philippines, 2000.
MLA način citiranja (9. izdanje)Cruz, Reil G. Principles of Travel and Tourism: Focus on the Philippines Ver. 2. Tourism Research Philippines, 2000.
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