APA (7th ed.) Citation

Williams, A. (1993). DOS 6, a developer's guide: Advanced programming guide to DOS. M%T Books.

Chicago Style (17th ed.) Citation

Williams, Al. DOS 6, a Developer's Guide: Advanced Programming Guide to DOS. New York, N.Y: M%T Books, 1993.

MLA (9th ed.) Citation

Williams, Al. DOS 6, a Developer's Guide: Advanced Programming Guide to DOS. M%T Books, 1993.