BRENNER, G. (1990). The Complete Handbook For The Entreprenuer Gary Brenner, Joel Ewan, Henry Custer. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)BRENNER, Gary. The Complete Handbook For The Entreprenuer Gary Brenner, Joel Ewan, Henry Custer. Prentice Hall, 1990.
Lua MLA (8ú heag.)BRENNER, Gary. The Complete Handbook For The Entreprenuer Gary Brenner, Joel Ewan, Henry Custer. Prentice Hall, 1990.
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