Scionwood of Pear Cultivars and Species Available from the U.S. Plant Introduction Station. Journal of the American Pomological Society, [S. l.], v. 35, n. 2, p. 71–74, 1981. DOI: 10.71318/apom.1981.35.2.71. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/1453. Acesso em: 8 feb. 2026.