Wolf, E.E.H., and J.T. Loubser. “Gibberellic Acid Levels and Quality Effects of Gibberellic Acid in Treated Table Grapes”. South African Journal of Enology and Viticulture 13, no. 2 (May 3, 2017): 57–63. Accessed February 28, 2026. https://www.journals.ac.za/sajev/article/view/2175.