Byrd, M. J. (2009). Small Business Management an entrepreuner's guidebook. MC GRAW HILL.
Lua i Stíl Chicago (17ú heag.)Byrd, Mary Jane. Small Business Management an Entrepreuner's Guidebook. MC GRAW HILL, 2009.
Lua MLA (8ú heag.)Byrd, Mary Jane. Small Business Management an Entrepreuner's Guidebook. MC GRAW HILL, 2009.
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