Outlines of the Apple Breeding Work at Jorkz, W. Germany. Journal of the American Pomological Society, [S. l.], v. 29, n. 3, p. 64–65, 1975. DOI: 10.71318/apom.1975.29.3.64. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1226. Acesso em: 9 feb. 2026.