Sources of Scionwood of Pomological Species, Cultivars and Selections of Plums in Agricultural Experiment Stations of the United States and Canada. Journal of the American Pomological Society, [S. l.], v. 23, n. 3, p. 43–47, 1969. DOI: 10.71318/apom.1969.23.3.43. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/981. Acesso em: 15 jan. 2026.