Dyfyniad APA

Dela Cruz, Y. L. P., & Pagayona, C. M. Perceived sustainability of mountain climbing on Mt. Pulag.

Dyfyniad Arddull Chicago

Dela Cruz, Yofrea Lou P., and Cerilyn M. Pagayona. Perceived Sustainability of Mountain Climbing on Mt. Pulag. 2005.

Dyfyniad MLA

Dela Cruz, Yofrea Lou P., and Cerilyn M. Pagayona. Perceived Sustainability of Mountain Climbing on Mt. Pulag.

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