APA (7th ed.) Citation

Earnshaw, J. D., & Blackford, W. A. R. (1970). Computer programming in Algol. Pitman.

Chicago Style (17th ed.) Citation

Earnshaw, John David, and W. A. R. Blackford. Computer Programming in Algol. London: Pitman, 1970.

MLA (8th ed.) Citation

Earnshaw, John David, and W. A. R. Blackford. Computer Programming in Algol. Pitman, 1970.

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