APA (7th ed.) Citation

LaLonde, W. R. (1977). Regular right part grammars and their parsers. Communications of the ACM, 20, 731. https://doi.org/10.1145/359842.359853

Chicago Style (17th ed.) Citation

LaLonde, W. R. "Regular Right Part Grammars and Their Parsers." Communications of the ACM 20 (1977): 731. https://doi.org/10.1145/359842.359853.

MLA (9th ed.) Citation

LaLonde, W. R. "Regular Right Part Grammars and Their Parsers." Communications of the ACM, vol. 20, 1977, p. 731, https://doi.org/10.1145/359842.359853.