Valiente, A. M. (1982). Vegetable marketing, Camarines Sur and Albay. Special Studies Division, Planning Service, Office of the Minister, Ministry of Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रValiente, A. M. Vegetable Marketing, Camarines Sur and Albay. Quezon City: Special Studies Division, Planning Service, Office of the Minister, Ministry of Agriculture, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रValiente, A. M. Vegetable Marketing, Camarines Sur and Albay. Special Studies Division, Planning Service, Office of the Minister, Ministry of Agriculture, 1982.
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