Grace, O.M., Klopper, R.R., Figueiredo, E. & Smith, G.F. 2011. The aloe names book. Strelitzia 28: i–viii.; 1–232. South African National Biodiversity Institute, Pretoria and the Royal Botanic Gardens, Kew.

Grace, O.M., Klopper, R.R., Figueiredo, E. & Smith, G.F. 2011. The aloe names book. Strelitzia 28: i–viii.; 1–232. South African National Biodiversity Institute, Pretoria and the Royal Botanic Gardens, Kew.
http://pza.sanbi.org/references/grace-om-klopper-rr-figueiredo-e-smith-gf-2011-aloe-names-book-strelitzia-28-i–viii-1–232