Borg, D., J. E. Richardson, D. J. Harris, L. Gautier, M. Hughes, and B. Mackinder. “PHYLOGENY OF TWO AFRICAN GENERA OF SAPOTACEAE – ENGLEROPHYTUM AND SYNSEPALUM”. Edinburgh Journal of Botany 76, no. 2 (March 26, 2019): 231–267. Accessed September 3, 2026. https://journals.rbge.org.uk/ejb/article/view/1730.