APA Style

Ireland, R, D., Barringer, B, R. (2012). Entrepreneurship: Successfully Launching New Ventures 4 Ed. (4). Essex: Pearson Education.

MLA Style

Ireland, R., Duane., Barringer, Bruce, R.. "Entrepreneurship: Successfully Launching New Ventures 4 Ed.". 4 Essex: Pearson Education, 2012. Manajemen.