Spartan Apple. Journal of the American Pomological Society, [S. l.], v. 11, n. 2, p. 22–22, 1956. DOI: 10.71318/apom.1956.11.2.22. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/178. Acesso em: 12 dec. 2025.