Held, G. (1987). IBM PC & PC XT: User`s Ref. Manual (2nd.). BPB.
芝加哥风格引文Held, Gilbert. IBM PC & PC XT: User`s Ref. Manual. 2nd. New Delhi: BPB, 1987.
MLA引文Held, Gilbert. IBM PC & PC XT: User`s Ref. Manual. 2nd. BPB, 1987.
警告:这些引文格式不一定是100%准确.
Held, G. (1987). IBM PC & PC XT: User`s Ref. Manual (2nd.). BPB.
芝加哥风格引文Held, Gilbert. IBM PC & PC XT: User`s Ref. Manual. 2nd. New Delhi: BPB, 1987.
MLA引文Held, Gilbert. IBM PC & PC XT: User`s Ref. Manual. 2nd. BPB, 1987.