Cita APA (7th ed.)

Campbell, M. (1994). DOS answers: Certified support. Osborne McGraw-Hill.

Cita Chicago (17th ed.)

Campbell, Mary. DOS Answers: Certified Support. New York: Osborne McGraw-Hill, 1994.

Cita MLA (9th ed.)

Campbell, Mary. DOS Answers: Certified Support. Osborne McGraw-Hill, 1994.