Feeding prickly pear to dairy catle in northern Mexico. Journal of the Professional Association for Cactus Development, [S. l.], p. 31–34, 1992. DOI: 10.56890/jpacd.vi.445. Disponível em: https://www.jpacd.org/jpacd/article/view/445. Acesso em: 16 oct. 2025.