APA (7th ed.) Citation

Birrell, A. B. (1977). System programming in a high-level language.

Chicago Style (17th ed.) Citation

Birrell, Andrew B. System Programming in a High-level Language. Cambridge, England, 1977.

MLA (9th ed.) Citation

Birrell, Andrew B. System Programming in a High-level Language. 1977.

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