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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিBruno, 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.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিBruno, 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.