Gaya APA
Ireland, R, D., Barringer, B, R.
(2008).
Entrepreneurship
(
Ed. 2)
.
:
Pearson.Singapore.
Gaya MLA
Ireland, R., Duane., Barringer, Bruce, R.
"Entrepreneurship".
Ed. 2
:
Pearson.Singapore,
2008.
Koleksi World Bank.