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.
Chicago-referens (17:e uppl.)De 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.
MLA-referens (9:e uppl.)De 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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