Gaya APA

Barringer, B, R., Ireland, R, D. (2019). Entrepreneurship : successfully launching new ventures (6th ed. Global Edition.). London: Pearson.

Gaya MLA

Barringer, Bruce, R.., Ireland, R., Duane. "Entrepreneurship : successfully launching new ventures". 6th ed. Global Edition. London: Pearson, 2019. Text.