Ennis — A Large Filbert. Journal of the American Pomological Society, [S. l.], v. 35, n. 3, p. 107–109, 1981. DOI: 10.71318/apom.1981.35.3.107. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1460. Acesso em: 9 dec. 2025.