«A Political Economy of Nature: Alexander Von Humboldt’s Essay on the Fluctuations in the Supplies of Gold». HiN – Alejandro de Humboldt en la Red. Revista internacional de estudios humboldtianos 18, no. 34 (abril 21, 2017): 81–91. Accedido marzo 28, 2026. https://hin-online.de/index.php/hin/article/view/252.