M. I. Biala, A. Y. Sanusi, in F. Akosile, „Foreign Direct Investment in West Africa: Sectoral Evidence on Pollution Haven and Resource Haven Hypotheses“, OE, let. 72, št. 2, str. 10–26, jun. 2026, Pridobljeno: jul. 21, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/6209