Apple Varieties in a Cold Climate. Journal of the American Pomological Society, [S. l.], v. 4, n. 3, p. 68–70, 1949. DOI: 10.71318/apom.1949.4.3.68. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1640. Acesso em: 17 feb. 2026.