De la Cruz, A. M. (1977). Academic preparation and work load of college teachers of national agricultural schools and colleges of the Bureau of Vocational Education. University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDe la Cruz, Andres Marcos. Academic Preparation and Work Load of College Teachers of National Agricultural Schools and Colleges of the Bureau of Vocational Education. Quezon City: University of the Philippines Library, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDe la Cruz, Andres Marcos. Academic Preparation and Work Load of College Teachers of National Agricultural Schools and Colleges of the Bureau of Vocational Education. University of the Philippines Library, 1977.
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