Cita APA (7a ed.)

(1993). TEACHES OS/2 2.1. ZIFF DAVIS PRESS.

Cita Chicago Style (17a ed.)

TEACHES OS/2 2.1. EMERYVILLS: ZIFF DAVIS PRESS, 1993.

Cita MLA (9a ed.)

TEACHES OS/2 2.1. ZIFF DAVIS PRESS, 1993.