Washington Fruit Tree Census. Journal of the American Pomological Society, [S. l.], v. 19, n. 4, p. 78–78, 1965. DOI: 10.71318/apom.1965.19.4.78. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/714. Acesso em: 11 dec. 2025.