Pilbeam, J. (2010). Stapeliads: A gallery of 686 pictures of all 57 genera of this popular group of succulent plants. British Cactus and Succulent Soc.
Chicago-Zitierstil (17. Ausg.)Pilbeam, John. Stapeliads: A Gallery of 686 Pictures of All 57 Genera of This Popular Group of Succulent Plants. Hornchurch, Essex: British Cactus and Succulent Soc, 2010.
MLA-Zitierstil (9. Ausg.)Pilbeam, John. Stapeliads: A Gallery of 686 Pictures of All 57 Genera of This Popular Group of Succulent Plants. British Cactus and Succulent Soc, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.