Macaranas, G. S. (1976). An analysis of the errors in the English written compositions of the college freshmen of the University of Pangasinan during the first semester, 1967-1968 [microform]. Photoduplication Service, University of the Philippines Library.
Chicago-referens (17:e uppl.)Macaranas, Gregoria S. An Analysis of the Errors in the English Written Compositions of the College Freshmen of the University of Pangasinan During the First Semester, 1967-1968 [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.
MLA-referens (9:e uppl.)Macaranas, Gregoria S. An Analysis of the Errors in the English Written Compositions of the College Freshmen of the University of Pangasinan During the First Semester, 1967-1968 [microform]. Photoduplication Service, University of the Philippines Library, 1976.