APA (7th ed.) Citation

Gookin, D. (1991). DOS for dummies. IDG Books Worldwide.

Chicago Style (17th ed.) Citation

Gookin, Dan. DOS for Dummies. San Mateo, Calif: IDG Books Worldwide, 1991.

MLA (9th ed.) Citation

Gookin, Dan. DOS for Dummies. IDG Books Worldwide, 1991.