Spur Type Apples. Journal of the American Pomological Society, [S. l.], v. 20, n. 3, p. 46–46, 1966. DOI: 10.71318/apom.1966.20.3.46a. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/811. Acesso em: 13 dec. 2025.