The Spartan and Jubilee Apples. Journal of the American Pomological Society, [S. l.], v. 3, n. 1, p. 13–14, 1948. DOI: 10.71318/apom.1948.3.1.13. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1237. Acesso em: 16 dec. 2025.