JAIN VIJAY K. (1994). `O`LEVEL MODULE - III SYSTEMS DESIGN & BUSINESS APPLICATIONS. BPB PUBLICATIONS.
Chicago-čujuhus (17. p.)JAIN VIJAY K. `O`LEVEL MODULE - III SYSTEMS DESIGN & BUSINESS APPLICATIONS. NEW DELHI: BPB PUBLICATIONS, 1994.
MLA-čujuhus (9. p.)JAIN VIJAY K. `O`LEVEL MODULE - III SYSTEMS DESIGN & BUSINESS APPLICATIONS. BPB PUBLICATIONS, 1994.
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