Cita APA (7a ed.)

Harris, R. W. (1990). DOS, Word perfect & Lotus office companion. Global Pub.

Cita Chicago Style (17a ed.)

Harris, Robert W. DOS, Word Perfect & Lotus Office Companion. Manila: Global Pub, 1990.

Cita MLA (9a ed.)

Harris, Robert W. DOS, Word Perfect & Lotus Office Companion. Global Pub, 1990.