Entrepreneurship : successfully launching new ventures / Bruce R. Barringer ; R. Duane Ireland. (1969). Upper Saddle River, NJ: Pearson Education, c.
Entrepreneurship : successfully launching new ventures / Bruce R. Barringer ; R. Duane Ireland. 3rd ed.. Upper Saddle River, NJ: Pearson Education, c, 1969. Buku Wajib.