APA (7th ed.) Citation

Microsoft. (1987). Microsoft Excel user's guide 1: Spreadsheet with business graphics and database. Microsoft Corporation.

Chicago Style (17th ed.) Citation

Microsoft. Microsoft Excel User's Guide 1: Spreadsheet with Business Graphics and Database. [Redmond, Wash.]: Microsoft Corporation, 1987.

MLA (9th ed.) Citation

Microsoft. Microsoft Excel User's Guide 1: Spreadsheet with Business Graphics and Database. Microsoft Corporation, 1987.