APA (7th ed.) Citation

Dahl, O., & Nygaard, K. (1966). SIMULA--an ALGOL-Based Simulation Language. Communications of the ACM, 9(9), 671. https://doi.org/10.1145/365813.365819

Chicago Style (17th ed.) Citation

Dahl, Ole-Johan, and Kristen Nygaard. "SIMULA--an ALGOL-Based Simulation Language." Communications of the ACM 9, no. 9 (1966): 671. https://doi.org/10.1145/365813.365819.

MLA (9th ed.) Citation

Dahl, Ole-Johan, and Kristen Nygaard. "SIMULA--an ALGOL-Based Simulation Language." Communications of the ACM, vol. 9, no. 9, 1966, p. 671, https://doi.org/10.1145/365813.365819.