APA (7th ed.) Citation

Catapul Inc. (1992). Microsoft windows 3.1 step by step. Microsoft press.

Chicago Style (17th ed.) Citation

Catapul Inc. Microsoft Windows 3.1 Step by Step. Redmond, Washington: Microsoft press, 1992.

MLA (9th ed.) Citation

Catapul Inc. Microsoft Windows 3.1 Step by Step. Microsoft press, 1992.