MUÑOZ, M. A.; BIGHAM, J. M. Minerology of Nipe Clay. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 76, n. 3-4, p. 107–117, 1992. DOI: 10.46429/jaupr.v76i3-4.4151. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/4151. Acesso em: 30 nov. 2022.