GESSIN JANICE. (1987). ADVANCED PFS: PROFESSIONAL WRITE AND FILE. OSBORNE MCGRAW-HILL.
Chicago-čujuhus (17. p.)GESSIN JANICE. ADVANCED PFS: PROFESSIONAL WRITE AND FILE. BERKELY CALIFORNIA: OSBORNE MCGRAW-HILL, 1987.
MLA-čujuhus (9. p.)GESSIN JANICE. ADVANCED PFS: PROFESSIONAL WRITE AND FILE. OSBORNE MCGRAW-HILL, 1987.
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