APA (7th ed.) Citation

Foley, M., & Hoare, C. (1971). Proof of a Recursive Program: Quicksort.

Chicago Style (17th ed.) Citation

Foley, M., and C. Hoare. Proof of a Recursive Program: Quicksort. 1971.

MLA (9th ed.) Citation

Foley, M., and C. Hoare. Proof of a Recursive Program: Quicksort. 1971.

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