APA (7e ed.) Bronvermelding

Constantin, C. L. (1979). Thrift education in the secondary schools of Aklan [microform]. Photoduplication Service. University of the Philippines Library.

Chicago (17e ed.) Bronvermelding

Constantin, Constancio L. Thrift Education in the Secondary Schools of Aklan [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1979.

MLA (9e ed.) Bronvermelding

Constantin, Constancio L. Thrift Education in the Secondary Schools of Aklan [microform]. Photoduplication Service. University of the Philippines Library, 1979.