APA (7th ed.) Citation

Williams, N. E., & Savage, J. H. (1971). Communicating with a computer: Programming in Student Language. Pitman (Canada).

Chicago Style (17th ed.) Citation

Williams, Norman E., and John H. Savage. Communicating with a Computer: Programming in Student Language. Toronto: Pitman (Canada), 1971.

MLA (8th ed.) Citation

Williams, Norman E., and John H. Savage. Communicating with a Computer: Programming in Student Language. Pitman (Canada), 1971.