O'MEALLY, Robert G. The Flat Plane, the Jagged Edge: Aaron Douglas’s Musical Art. American Studies, [S. l.], v. 49, n. 1/2, p. 21–35, 2010. DOI: 10.1353/amsj.v49i1/2.3939. Disponível em: https://journals.ku.edu/amsj/article/view/3939.. Acesso em: 2 may. 2024.