Gaya APA

Ireland, R, D., Barringer, B, R. (2008). Entrepreneurship Successfully Launching New Ventures (Second Edittion). New Jersey: Pearson Prentice Hall.

Gaya MLA

Ireland, R., Duane., Barringer, Bruce, R.. "Entrepreneurship Successfully Launching New Ventures". Second Edittion New Jersey: Pearson Prentice Hall, 2008. Text.