Cita APA (7a ed.)

Sheldon, G. (1993). WordPerfect para windows. Addison-Wesley.

Cita Chicago Style (17a ed.)

Sheldon, George. WordPerfect Para Windows. Wilmington, Delaware: Addison-Wesley, 1993.

Cita MLA (8a ed.)

Sheldon, George. WordPerfect Para Windows. Addison-Wesley, 1993.