Cita APA (7th ed.)

Pilgrim, A. (1991). Upgrade your IBM compatible and save a bundle (2nd ed.). Windcrest.

Cita Chicago (17th ed.)

Pilgrim, Aubrey. Upgrade Your IBM Compatible and Save a Bundle. 2nd ed. Blue Ridge Summit, Pa: Windcrest, 1991.

Cita MLA (9th ed.)

Pilgrim, Aubrey. Upgrade Your IBM Compatible and Save a Bundle. 2nd ed. Windcrest, 1991.