APA (7th ed.) Citation

Fenichel, R. R., Weizenbaum, J., & Yochelson, J. C. (1970). A Program to Teach Programming. Communications of the ACM, 13(3), 141. https://doi.org/10.1145/362052.362053

Chicago Style (17th ed.) Citation

Fenichel, Robert R., Joseph Weizenbaum, and Jerome C. Yochelson. "A Program to Teach Programming." Communications of the ACM 13, no. 3 (1970): 141. https://doi.org/10.1145/362052.362053.

MLA (9th ed.) Citation

Fenichel, Robert R., et al. "A Program to Teach Programming." Communications of the ACM, vol. 13, no. 3, 1970, p. 141, https://doi.org/10.1145/362052.362053.