APA (7th ed.) Citation

Colantonio, Ernest S. (1989). Software guide using DOS with OS/2. D. C. Heath.

Chicago Style (17th ed.) Citation

Colantonio, Ernest S. Software Guide Using DOS with OS/2. Lexington, Mass: D. C. Heath, 1989.

MLA (9th ed.) Citation

Colantonio, Ernest S. Software Guide Using DOS with OS/2. D. C. Heath, 1989.

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