A. Olure-Bank, M. Muktar, A. Salihu, and F. K. Usman, “Effect of economic integration and trade facilitation on Intra-manufacturing export among ECOWAS member states”, JES, vol. 10, no. 1, pp. 33–52, Apr. 2022, doi: 10.22437/ppd.v10i1.17385.