Yap, D. (2013). Earth-friendly tourism come-ons to be pushed. Philippine Daily Inquirer.
Chicagoスタイル(17版)引用形式Yap, DJ. "Earth-friendly Tourism Come-ons to Be Pushed." Philippine Daily Inquirer 2013.
MLA(9版)引用形式Yap, DJ. "Earth-friendly Tourism Come-ons to Be Pushed." Philippine Daily Inquirer, 2013.
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