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.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (9ú heag.)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.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.