CLIFTON H D. (1974). SYSTEMS ANALYSIS FOR BUSINESS DATA PROCESSING. PETROCELLI BOOKS.
Čikaški stil citiranja (17. izdanje)CLIFTON H D. SYSTEMS ANALYSIS FOR BUSINESS DATA PROCESSING. NEW YORK: PETROCELLI BOOKS, 1974.
MLA način citiranja (9. izdanje)CLIFTON H D. SYSTEMS ANALYSIS FOR BUSINESS DATA PROCESSING. PETROCELLI BOOKS, 1974.
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