HELD GILBERT. (1987). IBM PC AND PC XT USER`S REFERENCE MANUAL (2.). BPB PUBLICATIONS.
芝加哥风格引文HELD GILBERT. IBM PC AND PC XT USER`S REFERENCE MANUAL. 2. DELHI: BPB PUBLICATIONS, 1987.
MLA引文HELD GILBERT. IBM PC AND PC XT USER`S REFERENCE MANUAL. 2. BPB PUBLICATIONS, 1987.
警告：这些引文格式不一定是100％准确.