The Useful Trees of Northern Nigeria. Indian Forester, [S. l.], v. 52, n. 4, p. 158–162, 1926. DOI: 10.36808/if/1926/v52i4/18987. Disponível em: http://indianforester.co.in/index.php/indianforester/article/view/18987. Acesso em: 4 dec. 2025.