Tubat, D. T. (1976). A survey of the common errors in English theme writing commited by senior high school students in the public and private high schools of Dumaguete City [microform]. Photoduplication Service. University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)Tubat, Diosdada T. A Survey of the Common Errors in English Theme Writing Commited by Senior High School Students in the Public and Private High Schools of Dumaguete City [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.
Citatione MLA (9a ed.)Tubat, Diosdada T. A Survey of the Common Errors in English Theme Writing Commited by Senior High School Students in the Public and Private High Schools of Dumaguete City [microform]. Photoduplication Service. University of the Philippines Library, 1976.