Gololo, Sechene S., et al. “Phytochemical Contents and Antioxidant Capacity of the Leaves of Aloe Greatheadii Var. Davyana from Four South African Provinces”. Asian Journal of Chemistry, vol. 31, no. 8, June 2019, pp. 1830-4, doi:10.14233/ajchem.2019.22019.