APA (7th ed.) Citation

Grimes, G. (1992). The first book of DR DOS 6. SAMS.

Chicago Style (17th ed.) Citation

Grimes, Galen. The First Book of DR DOS 6. Carmel, Ind: SAMS, 1992.

MLA (9th ed.) Citation

Grimes, Galen. The First Book of DR DOS 6. SAMS, 1992.

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