Apple Color Variation. Journal of the American Pomological Society, [S. l.], v. 11, n. 4, p. 60–60, 1957. DOI: 10.71318/apom.1957.11.4.60. Disponível em: https://journal.americanpomological.org/index.php/jofaps/article/view/210. Acesso em: 6 feb. 2026.