BRESSER, K. W. Quartärforschung in Nordamerika. ERDKUNDE, [S. l.], v. 5, n. 2, p. 174–176, 1951. DOI: 10.3112/erdkunde.1951.02.12. Disponível em: https://www.erdkunde.uni-bonn.de/article/view/995. Acesso em: 17 may. 2025.