Não informado. (1963). Memo to the Faculty. University of Michigan, Center for Research on Learning and Teaching.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Memo to the Faculty. Ann Arbor, Mich: University of Michigan, Center for Research on Learning and Teaching, 1963.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Memo to the Faculty. University of Michigan, Center for Research on Learning and Teaching, 1963.
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