DOVETON, J.H.; CHARPENTEIR, R.R.; METZGER, E.P. Lithofacies analysis of the Simpson Group in south-central Kansas. Bulletin (Kansas Geological Survey), [S. l.], p. 1–34, 1990. DOI: 10.17161/kgsbulletin.no.23591. Disponível em: https://journals.ku.edu/kgsbulletin/article/view/23591. Acesso em: 13 apr. 2025.