Pear Cultivars of North America. Journal of the American Pomological Society, [S. l.], v. 34, n. 4, p. 74–83, 1980. DOI: 10.71318/apom.1980.34.4.74. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1432. Acesso em: 1 feb. 2026.