APA (7th ed.) Citation

Ryan, D. L. (1989). Computer-aided design for AutoCAD users. Prentice Hall.

Chicago Style (17th ed.) Citation

Ryan, Daniel L. Computer-aided Design for AutoCAD Users. Englewood Cliffs, N.J.: Prentice Hall, 1989.

MLA (9th ed.) Citation

Ryan, Daniel L. Computer-aided Design for AutoCAD Users. Prentice Hall, 1989.