Smith, P. C. (1981). Population pressure and social response on the Ilocos Coast in the Philippines. East-West Population Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSmith, Peter Colin. Population Pressure and Social Response on the Ilocos Coast in the Philippines. Honolulu, Hawaii: East-West Population Institute, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSmith, Peter Colin. Population Pressure and Social Response on the Ilocos Coast in the Philippines. East-West Population Institute, 1981.
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