HISRICH ROBERT D. (2000). ENTREPRENEURSHIP (4TH.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
Lua i Stíl Chicago (17ú heag.)HISRICH ROBERT D. ENTREPRENEURSHIP. 4TH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2000.
Lua MLA (9ú heag.)HISRICH ROBERT D. ENTREPRENEURSHIP. 4TH. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2000.
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