Valenzona, S. G. (1977). Maritime Industry Development Institute: A proposal. University of the Philippines College Cebu, Center for Regional Development Operations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रValenzona, Salvador G. Maritime Industry Development Institute: A Proposal. Cebu City: University of the Philippines College Cebu, Center for Regional Development Operations, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रValenzona, Salvador G. Maritime Industry Development Institute: A Proposal. University of the Philippines College Cebu, Center for Regional Development Operations, 1977.
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