Entrepreneurship : successfully launching new ventures / Bruce R. Barringer ; R. Duane Ireland. (1968). Upper Saddle River, NJ: Pearson Education, c.
Entrepreneurship : successfully launching new ventures / Bruce R. Barringer ; R. Duane Ireland. 2nd ed.. Upper Saddle River, NJ: Pearson Education, c, 1968. Buku Wajib.