Philippines. National Mapping and Resource Information Authority. Cotabato City. National Mapping and Resource Information Authority, 1988.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines. National Mapping and Resource Information Authority. Cotabato City. Makati, [Metro Manila]: National Mapping and Resource Information Authority, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines. National Mapping and Resource Information Authority. Cotabato City. National Mapping and Resource Information Authority, 1988.
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