APA (7th ed.) Citation

Mills, H. D. (1975). The New Math of Computer Programming. Communications of the ACM, 18(1), 43. https://doi.org/10.1145/360569.360659

Chicago Style (17th ed.) Citation

Mills, Harlan D. "The New Math of Computer Programming." Communications of the ACM 18, no. 1 (1975): 43. https://doi.org/10.1145/360569.360659.

MLA (9th ed.) Citation

Mills, Harlan D. "The New Math of Computer Programming." Communications of the ACM, vol. 18, no. 1, 1975, p. 43, https://doi.org/10.1145/360569.360659.