Swanepoel, J. J., A. C. De La Harpe, and C. J. Orffer. “A Comparative Anatomical Study of the Grapevine Shoot: I Epidermis”. South African Journal of Enology and Viticulture, vol. 5, no. 2, May 2017, pp. 51-57, doi:10.21548/5-2-2359.