Young, D. H. (1977). Pupil-directed versus teacher directed classrooms: Changes in work-study skills at three achievement levels [microform]. Photoduplication Service. University of the Philippines Library.
Chicago Style (17. basım) AtıfYoung, Donna H. Pupil-directed Versus Teacher Directed Classrooms: Changes in Work-study Skills at Three Achievement Levels [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA (9th ed.) AtıfYoung, Donna H. Pupil-directed Versus Teacher Directed Classrooms: Changes in Work-study Skills at Three Achievement Levels [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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