APA (7th ed.) Citation

Duffy, T. (1992). Essential DOS 3.3. Wadsworth Pub. Co..

Chicago Style (17th ed.) Citation

Duffy, Tim. Essential DOS 3.3. Belmont, Calif.: Wadsworth Pub. Co., 1992.

MLA (8th ed.) Citation

Duffy, Tim. Essential DOS 3.3. Wadsworth Pub. Co., 1992.

Warning: These citations may not always be 100% accurate.