APA (7 वां संस्करण) प्रशस्ति पत्र

Villanueva, T. R. (2005). Upland ecosystem management (2nd ed.). University of the Philippines Open University.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Villanueva, Teodoro R. Upland Ecosystem Management. 2nd ed. Quezon City: University of the Philippines Open University, 2005.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Villanueva, Teodoro R. Upland Ecosystem Management. 2nd ed. University of the Philippines Open University, 2005.

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