Parker Pear in Western Nebraska. Journal of the American Pomological Society, [S. l.], v. 5, n. 2, p. 54–54, 1950. DOI: 10.71318/apom.1950.5.2.54. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/2169. Acesso em: 13 dec. 2025.