Cita APA

Davis, R. H., Alexander, L. T., & Yelon, S. L. (1974). Learning system design: An approach to the improvement of instruction. McGraw-Hill.

Chicago Edition Citation

Davis, Robert H., Lawrence T. Alexander, i Stephen L. Yelon. Learning System Design: An Approach to the Improvement of Instruction. New York: McGraw-Hill, 1974.

Cita MLA

Davis, Robert H., et al. Learning System Design: An Approach to the Improvement of Instruction. McGraw-Hill, 1974.