SAWIN, Robert S. Classification of Red Beds at Point of Rocks, Morton County, Kansas: A Historical Review.
Current Research in Earth Sciences,
[S. l.], n. 262, p. 1–5, 2016. DOI:
10.17161/cres.v0i262.11841. Disponível em:
https://journals.ku.edu/cres/article/view/11841. Acesso em: 13 apr. 2025.