Gaya APA
Ireland, R, D., Barringer, B, R. (2012).
Entrepreneurship; Successfully Launching New Ventures (4).
England:
Pearson Education.
Gaya MLA
Ireland, R., Duane., Barringer, Bruce, R..
"Entrepreneurship; Successfully Launching New Ventures".
4
England:
Pearson Education,
2012.
Textbook.