Blackberry Production and Cultivar Situation in North America. Journal of the American Pomological Society, [S. l.], v. 34, n. 2, p. 36–42, 1980. DOI: 10.71318/apom.1980.34.2.36. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1420. Acesso em: 2 feb. 2026.