RAMIREZ, G. Where Do We Go from Here?. Journal of the Professional Association for Cactus Development, [S. l.], v. 2, p. 76–78, 1997. DOI: 10.56890/jpacd.v2i.170. Disponível em: https://www.jpacd.org/jpacd/article/view/170. Acesso em: 16 oct. 2025.