’Triple Crown’ Thornless Blackberry. Journal of the American Pomological Society, [S. l.], v. 52, n. 3, p. 124–127, 1998. DOI: 10.71318/apom.1998.52.3.124. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/2312. Acesso em: 11 dec. 2025.