Pinpin, L. C. (1999). Indigenous environmental practices in Cordillera: An approach to environmental education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPinpin, Lilibeth C. Indigenous Environmental Practices in Cordillera: An Approach to Environmental Education. 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPinpin, Lilibeth C. Indigenous Environmental Practices in Cordillera: An Approach to Environmental Education. 1999.
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