Bruno, J. A. (1979). A survey of opinions of teachers, school administrators and parents on the use of the vernacular as a medium of instruction in grades I and II in Jolo District [microform]. Photoduplication Service. University of the Philippines Library.
Cytowanie według stylu Chicago (wyd. 17)Bruno, Juanito A. A Survey of Opinions of Teachers, School Administrators and Parents on the Use of the Vernacular as a Medium of Instruction in Grades I and II in Jolo District [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1979.
Cytowanie według stylu MLA (wyd. 9)Bruno, Juanito A. A Survey of Opinions of Teachers, School Administrators and Parents on the Use of the Vernacular as a Medium of Instruction in Grades I and II in Jolo District [microform]. Photoduplication Service. University of the Philippines Library, 1979.