Held G. (1984). IBM PC user's reference manual. Hayden Book Co.
Чикаго маягийн жагсаалтHeld G. IBM PC User's Reference Manual. Hasbrouck Heights, N.J: Hayden Book Co, 1984.
MLA ишлэлHeld G. IBM PC User's Reference Manual. Hayden Book Co, 1984.
Warning: These citations may not always be 100% accurate.