APA (7th ed.) Citation

Fisher, R. O., Shepard, C. D., & Ashenhurst, R. L. (1967). Time Sharing on a Computer with a Small Memory. Communications of the ACM, 10(2), 77. https://doi.org/10.1145/363067.363086

Chicago Style (17th ed.) Citation

Fisher, R. O., C. D. Shepard, and R. L. Ashenhurst. "Time Sharing on a Computer with a Small Memory." Communications of the ACM 10, no. 2 (1967): 77. https://doi.org/10.1145/363067.363086.

MLA (9th ed.) Citation

Fisher, R. O., et al. "Time Sharing on a Computer with a Small Memory." Communications of the ACM, vol. 10, no. 2, 1967, p. 77, https://doi.org/10.1145/363067.363086.