The History of the ‘Empire’ Apple. Journal of the American Pomological Society, [S. l.], v. 47, n. 2, p. 70–72, 1993. DOI: 10.71318/apom.1993.47.2.70. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/2007. Acesso em: 16 feb. 2026.