APA (7th ed.) Citation

Underdahl, Brian. (1993). Upgrading to MS-DOS 6. Que Corp.

Chicago Style (17th ed.) Citation

Underdahl, Brian. Upgrading to MS-DOS 6. Carmel, Ind: Que Corp, 1993.

MLA (9th ed.) Citation

Underdahl, Brian. Upgrading to MS-DOS 6. Que Corp, 1993.

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