SCHWARZ, Ingo. Alexander von Humboldt’s Correspondence with Johann Gottfried Flügel. Yearbook of German-American Studies, [S. l.], v. 46, p. 87–94, 2011. DOI: 10.17161/ygas.v46i.18787. Disponível em: https://journals.ku.edu/ygas/article/view/18787. Acesso em: 13 apr. 2025.