Gage, N. L. (1978). The scientific basis of the art of teaching. Teachers College Press, Teachers College, Columbia University.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিGage, N. L. The Scientific Basis of the Art of Teaching. New York: Teachers College Press, Teachers College, Columbia University, 1978.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিGage, N. L. The Scientific Basis of the Art of Teaching. Teachers College Press, Teachers College, Columbia University, 1978.
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