Purple Autumn, a New Raspberry Variety. Journal of the American Pomological Society, [S. l.], v. 8, n. 2, p. 22–22, 1953. DOI: 10.71318/apom.1953.8.2.22. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/3157. Acesso em: 2 feb. 2026.