Coloma, O. A. (1968). A theory of agricultural development in the Philippines. College of Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रColoma, Othaniel A. A Theory of Agricultural Development in the Philippines. [Los Baños: College of Agriculture, 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रColoma, Othaniel A. A Theory of Agricultural Development in the Philippines. College of Agriculture, 1968.
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