Não informado. (1976). Educational Research Quarterly. University of Southern California, School of Education.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Educational Research Quarterly. Los Angeles, Calif: University of Southern California, School of Education, 1976.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Educational Research Quarterly. University of Southern California, School of Education, 1976.
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