APA-viite (7. p.)
Davis, R. H., Alexander, L. T., & Yelon, S. L. (1974). Learning system design: An approach to the improvement of instruction. McGraw-Hill.
Chicago-viite (17. p.)
Davis, Robert H., Lawrence T. Alexander, ja Stephen L. Yelon. Learning System Design: An Approach to the Improvement of Instruction. New York: McGraw-Hill, 1974.
MLA-viite (9. p.)
Davis, Robert H., et al. Learning System Design: An Approach to the Improvement of Instruction. McGraw-Hill, 1974.
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