Sison, T. V. (1979). The behavior profile of the grade one pupils in Bagong Pag-asa Elementary School, school year 1971-72 [microform]. Photoduplication Service, University of the Philippines Library.
Chicago-referens (17:e uppl.)Sison, Trinidad Valerio. The Behavior Profile of the Grade One Pupils in Bagong Pag-asa Elementary School, School Year 1971-72 [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1979.
MLA-referens (9:e uppl.)Sison, Trinidad Valerio. The Behavior Profile of the Grade One Pupils in Bagong Pag-asa Elementary School, School Year 1971-72 [microform]. Photoduplication Service, University of the Philippines Library, 1979.
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