Yararlandığım kaynaklar:
Kitaplar:
Wolfgang Kawollek - Sukulenten für Zimmer und Fensterbank
William Davidson, Ray Bilton, Clive Innes - Exotic Houseplants
Rudolf Subik, Libor Kunde - The Complete Encyclopedia of Cacti
Internet Siteleri:
On-line Guide to the positive identification of Members of the Cactus Family
Cactus Info :: Growing Cacti & Succulents with Pleasure
Misouri Botanical Garden