APA (7th ed.) Citation

Knuth, D. E. (1967). The Remaining Trouble Spots in ALGOL 60. Communications of the ACM, 10(10), 611. https://doi.org/10.1145/363717.363743

Chicago Style (17th ed.) Citation

Knuth, Donald E. "The Remaining Trouble Spots in ALGOL 60." Communications of the ACM 10, no. 10 (1967): 611. https://doi.org/10.1145/363717.363743.

MLA (9th ed.) Citation

Knuth, Donald E. "The Remaining Trouble Spots in ALGOL 60." Communications of the ACM, vol. 10, no. 10, 1967, p. 611, https://doi.org/10.1145/363717.363743.