“An Evaluation Over 16 Years of Delicious Strains and Other Cultivars on Several Rootstocks and Hardy Interstems”. Journal of the American Pomological Society 36, no. 2 (April 1, 1982): 37–45. Accessed December 10, 2025. https://journal.americanpomological.org/index.php/jofaps/article/view/1479.