WEBER SYSTEMS. (1986). IBM PC & XT: USERS HANDBOOK. BPB PUBLICATIONS.
Chicago-čujuhus (17. p.)WEBER SYSTEMS. IBM PC & XT: USERS HANDBOOK. DELHI: BPB PUBLICATIONS, 1986.
MLA-čujuhus (9. p.)WEBER SYSTEMS. IBM PC & XT: USERS HANDBOOK. BPB PUBLICATIONS, 1986.
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