MALTSBERGER, W. A. Cactus as a resource. Journal of the Professional Association for Cactus Development, [S. l.], v. 1, p. 3–9, 1996. DOI: 10.56890/jpacd.v1i.189. Disponível em: https://jpacd.org/jpacd/article/view/189. Acesso em: 20 jan. 2026.