Performance of the Spencer Apple in Massachusetts. Journal of the American Pomological Society, [S. l.], v. 15, n. 1, p. 16–16, 1960. DOI: 10.71318/apom.1960.15.1.16a. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/392. Acesso em: 12 dec. 2025.