Não informado. (2001). Philippine Agriculturist. University of the Philippines, College of Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Philippine Agriculturist. Los Banos, Filipinas: University of the Philippines, College of Agriculture, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Philippine Agriculturist. University of the Philippines, College of Agriculture, 2001.
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