APA Style

Microsoft Word : Word Processing Program for the Macintosh Version 5.0. (1991). Washington: Microsoft Corporation.

Chicago Style

Microsoft Word : Word Processing Program for the Macintosh Version 5.0. . Washington: Microsoft Corporation, 1991. Text.

MLA Style

Microsoft Word : Word Processing Program for the Macintosh Version 5.0. . Washington: Microsoft Corporation, 1991. Text.

Turabian Style

Microsoft Word : Word Processing Program for the Macintosh Version 5.0. Washington: Microsoft Corporation, 1991. Print.