Citazione Stile APA (7a Edizione)

Held, G. (1987). IBM PC & PC XT: User`s Ref. Manual (2nd.). BPB.

Citazione stile Chigago Style (17a edizione)

Held, Gilbert. IBM PC & PC XT: User`s Ref. Manual. 2nd. New Delhi: BPB, 1987.

Citatione MLA (9a ed.)

Held, Gilbert. IBM PC & PC XT: User`s Ref. Manual. 2nd. BPB, 1987.