Cita APA (7th ed.)

Harris, R. W. (1994). DOS, WordPerfect & Lotus office companion (4th ed.). Ventana Press.

Cita Chicago (17th ed.)

Harris, Robert W. DOS, WordPerfect & Lotus Office Companion. 4th ed. Chapel Hill, NC: Ventana Press, 1994.

Cita MLA (8th ed.)

Harris, Robert W. DOS, WordPerfect & Lotus Office Companion. 4th ed. Ventana Press, 1994.