Ramos, B. V. (2003). The abong: A witness to the I'wak simplicity, tranquility and accord with nature. Journal of Northern Luzon.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRamos, Bonifacio V. "The Abong: A Witness to the I'wak Simplicity, Tranquility and Accord with Nature." Journal of Northern Luzon 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRamos, Bonifacio V. "The Abong: A Witness to the I'wak Simplicity, Tranquility and Accord with Nature." Journal of Northern Luzon, 2003.
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