APA (7th ed.) Citation

Hull, T. E., & Day, D. D. F. (1970). Computers and problem solving. Addison-Wesley (Canada).

Chicago Style (17th ed.) Citation

Hull, T. E., and D. D. F. Day. Computers and Problem Solving. Don Mills, Ont., Reading, Mass.: Addison-Wesley (Canada), 1970.

MLA (9th ed.) Citation

Hull, T. E., and D. D. F. Day. Computers and Problem Solving. Addison-Wesley (Canada), 1970.