APA (7th ed.) Citation

Gennart, P. E., & Louis, G. (1975). Algol 68 19 reference manual.

Chicago Style (17th ed.) Citation

Gennart, P. E., and G. Louis. Algol 68 19 Reference Manual. Bruxelles, 1975.

MLA (9th ed.) Citation

Gennart, P. E., and G. Louis. Algol 68 19 Reference Manual. 1975.

Warning: These citations may not always be 100% accurate.