APA (7th ed.) Citation

Duffy , T. (1997). Microsoft office 97 Professional. Addison- wesley.

Chicago Style (17th ed.) Citation

Duffy , Tim. Microsoft Office 97 Professional. Massachusetts: Addison- wesley, 1997.

MLA (8th ed.) Citation

Duffy , Tim. Microsoft Office 97 Professional. Addison- wesley, 1997.