APA (7th ed.) Citation

Goodell, T. (1989). DOS 4.0: Customizing the shell. Management Information Source, Inc..

Chicago Style (17th ed.) Citation

Goodell, Thomas. DOS 4.0: Customizing the Shell. Portland, Or.: Management Information Source, Inc., 1989.

MLA (9th ed.) Citation

Goodell, Thomas. DOS 4.0: Customizing the Shell. Management Information Source, Inc., 1989.

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