APA (7th ed.) Citation

Coombs, M. J., & Alty, J. L. (1981). Computing skills and the user interface. Academic Press.

Chicago Style (17th ed.) Citation

Coombs, M. J., and J. L. Alty. Computing Skills and the User Interface. London ; New York: Academic Press, 1981.

MLA (9th ed.) Citation

Coombs, M. J., and J. L. Alty. Computing Skills and the User Interface. Academic Press, 1981.