Rotyp, a Patented Apple Stock from Holland. Journal of the American Pomological Society, [S. l.], v. 23, n. 1, p. 17–18, 1969. DOI: 10.71318/apom.1969.23.1.17. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/950. Acesso em: 7 aug. 2026.