Tapay, N. E. (1977). The effects of farmer's education on production and income [microform]. Photoduplication Service, University of the Philippines Library.
Chicago-referens (17:e uppl.)Tapay, Nenita Estolano. The Effects of Farmer's Education on Production and Income [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
MLA-referens (9:e uppl.)Tapay, Nenita Estolano. The Effects of Farmer's Education on Production and Income [microform]. Photoduplication Service, University of the Philippines Library, 1977.
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