Rosiana, N., R. Nurmalina, R. Winandi, and A. Rifin. “THE LEVEL OF COMPARATIVE ADVANTAGES OF WORLD MAIN COFFEE PRODUCERS”. Buletin Ilmiah Litbang Perdagangan, Vol. 11, no. 2, Dec. 2017, pp. 227-46, doi:10.30908/bilp.v11i2.274.