2013. ’Gala’ Apple Trees on Supporter 4, P.14, and Different Strains of B.9, M.9 and M.26 Rootstocks: Final 10-Year Report on the 2002 NC-140 Apple Rootstock Trial. Journal of the American Pomological Society. 67, 2 (Apr. 2013), 62–71. DOI:https://doi.org/10.71318/apom.2013.67.2.62.