Suffolk Early Blackcurrant. Journal of the American Pomological Society, [S. l.], v. 15, n. 4, p. 62–62, 1961. DOI: 10.71318/apom.1961.15.4.62b. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/442. Acesso em: 14 dec. 2025.