O.H, .-. (1968). Kaplan, Jacob J., The Challenge of Foreign Aid - Policies, Problems, and Possibilities, Frederick A. Praeger, New York, 1967 (andra tryckn. 1968) - Praeger Series on International Economics and Development. Ledelse Og Erhvervsøkonomi, 32. Hentet fra https://tidsskrift.dk/ledelseogerhvervsoekonomi/article/view/34464