Held,Gilbert. (1987). IBM PC& PC X T ;User's Reference manual (2nd.). BPB Publications.
Chicago Edition CitationHeld,Gilbert. IBM PC& PC X T ;User's Reference Manual. 2nd. New Delhi: BPB Publications, 1987.
MLA引文Held,Gilbert. IBM PC& PC X T ;User's Reference Manual. 2nd. BPB Publications, 1987.
警告:這些引文格式不一定是100%准確.