APA Edition Citation

Held Gilbert. (1987). IBM PC AT User's referene manual. BPB publications.

Chicago Edition Citation

Held Gilbert. IBM PC AT User's Referene Manual. New Delhi: BPB publications, 1987.

MLA Edition Citation

Held Gilbert. IBM PC AT User's Referene Manual. BPB publications, 1987.

Warning: These citations may not always be 100% accurate.