APA (7th ed.) Citation

Rettig, M. (1992). Interface design when you don't know how. Communications of the ACM, 35, 29. https://doi.org/10.1145/129617.129626

Chicago Style (17th ed.) Citation

Rettig, Marc. "Interface Design When You Don't Know How." Communications of the ACM 35 (1992): 29. https://doi.org/10.1145/129617.129626.

MLA (9th ed.) Citation

Rettig, Marc. "Interface Design When You Don't Know How." Communications of the ACM, vol. 35, 1992, p. 29, https://doi.org/10.1145/129617.129626.