APA (7th ed.) Citation

Mathies, M. L., & Watson, P. G. (1973). Computer-based reference service. American Library Association.

Chicago Style (17th ed.) Citation

Mathies, M. Lorraine, and Peter G. Watson. Computer-based Reference Service. Chicago: American Library Association, 1973.

MLA (8th ed.) Citation

Mathies, M. Lorraine, and Peter G. Watson. Computer-based Reference Service. American Library Association, 1973.