American Pomological Society. Journal of the American Pomological Society, [S. l.], v. 21, n. 3, p. 56–64, 1967. DOI: 10.71318/apom.1967.21.3.56. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/872. Acesso em: 18 dec. 2025.