VIEIRA WALTER. (1985). SALES MANAGERS. INDIA BOOK HOUSE.
Čikaški stil citiranja (17. izdanje)VIEIRA WALTER. SALES MANAGERS. BOMBAY: INDIA BOOK HOUSE, 1985.
MLA način citiranja (9. izdanje)VIEIRA WALTER. SALES MANAGERS. INDIA BOOK HOUSE, 1985.
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