Pichay, L. C. (1977). Balligi ni panagsalimetmet; tularamid a tallo a parang [microform]. Photoduplication Service. University of the Philippines Library.
Chicago-referens (17:e uppl.)Pichay, Leon C. Balligi Ni Panagsalimetmet; Tularamid a Tallo a Parang [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA-referens (9:e uppl.)Pichay, Leon C. Balligi Ni Panagsalimetmet; Tularamid a Tallo a Parang [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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