APA (7th ed.) Citation

Gotkin, L. G., & Goldstein, L. S. (1962). Programed instruction for the younger learner. Center for Programed Instruction.

Chicago Style (17th ed.) Citation

Gotkin, Lassar G., and Leo S. Goldstein. Programed Instruction for the Younger Learner. N.Y.: Center for Programed Instruction, 1962.

MLA (8th ed.) Citation

Gotkin, Lassar G., and Leo S. Goldstein. Programed Instruction for the Younger Learner. Center for Programed Instruction, 1962.