A Proven Apple Rootstock — EM VII. Journal of the American Pomological Society, [S. l.], v. 25, n. 1, p. 11–12, 1971. DOI: 10.71318/apom.1971.25.1.11. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1056. Acesso em: 17 feb. 2026.