BAQRI, S.; RAJPAR, A. The Clay Mineral Studies of the Khewra Sandstone Exposed at Khewra, Eastern Salt Range. Journal of Himalayan Earth Sciences, [S. l.], v. 24, n. 1, p. 203-214, 1991. Disponível em: http://ojs.uop.edu.pk/jhes/article/view/1403. Acesso em: 4 jan. 2025.