Gaya APA

Barringer, B, R., Ireland, R, D. (2010). Entrepreneurship Successfully Launching New Ventures (Thrid Edition). United States of America: Pearson Education.

Gaya MLA

Barringer, Brunce, R.., Ireland, R., Duane. "Entrepreneurship Successfully Launching New Ventures". Thrid Edition United States of America: Pearson Education, 2010. Textbook.