Carter, S., J.J. Lavranos, L.E. Newton, and C.C. Walker, 2011, Aloes: The Definitive Guide: Kew, England, Kew Books.
Castillon, J.B., and J.P. Castillon, 2010, The Aloe of Madagascar: Privately published.
Craib, C., 2005, Grass Aloes in the South African Veld: Umdaus Press, Hatfield, South Africa.
Lane, S.S., 2004, The Aloes of Malawi:Umdaus Press.
Newton, L.E., and G.D. Rowley, 2001, CITES: Aloe & Pachypodium: Royal Botanical Gardens, Kew.
Reynolds, G.W., 1950, The Aloes of South Africa: The Aloes Book Fund, South Africa.
Reynolds, G.W., 1966, The Aloes of Tropical Africa and Madagascar: The Aloes Book Fund, Swaziland.
Rothmann, S.,2004, Aloes, aristocrats of Namibian Flora: Creda Communications, Cape Town, RSA.
van Wyk, B.E., and
Gideon Smith, 2003, Guide to the Aloes
of South Africa (2nd edition): Briza
Publications, Pretoria, South Africa.
Also see the Institute for Aloe Studies website: http://www.aloestudies.org/species.html
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