APA (7th ed.) Citation

Keedy, H. F. (1991). An introduction to CAD using CADKEY (2nd ed.). PWS-Kent.

Chicago Style (17th ed.) Citation

Keedy, Hugh F. An Introduction to CAD Using CADKEY. 2nd ed. Boston, Mass.: PWS-Kent, 1991.

MLA (9th ed.) Citation

Keedy, Hugh F. An Introduction to CAD Using CADKEY. 2nd ed. PWS-Kent, 1991.