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Sermpong Phapant. 1977. A sociological study of an urban sub-area : Barrio Escopa, project 4 Quezon city. Quezon:University of the Philippines System;
Sermpong Phapant. (1977) A sociological study of an urban sub-area : Barrio Escopa, project 4 Quezon city (รายงานผลงานวิจัย). University of the Philippines System:Quezon.
Sermpong Phapant. A sociological study of an urban sub-area : Barrio Escopa, project 4 Quezon city. Quezon:University of the Philippines System, 1977.
Sermpong Phapant. (1977) A sociological study of an urban sub-area : Barrio Escopa, project 4 Quezon city (รายงานผลงานวิจัย). University of the Philippines System:Quezon.