Cita APA (7th ed.)

Piengporn, C. (1976). A survey of the problems of adolescents in selected high schools [microform]. Photoduplication Service. University of the Philippines Library.

Cita Chicago (17th ed.)

Piengporn, Cholsuvanwath. A Survey of the Problems of Adolescents in Selected High Schools [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.

Cita MLA (9th ed.)

Piengporn, Cholsuvanwath. A Survey of the Problems of Adolescents in Selected High Schools [microform]. Photoduplication Service. University of the Philippines Library, 1976.