Berthet, Marina. “São Tomé and Príncipe: Thoughts on Aspects of Its Post-Independence Agricultural History”. Estudos Ibero-Americanos 42, no. 3 (November 24, 2016): 961–986. Accessed October 19, 2024. https://revistaseletronicas.pucrs.br/iberoamericana/article/view/23107.