Pilbeam, J. (2014). Stapeliads (refreshed): A gallery of 714 pictures of all 59 genera of this popular group of succulent plants (First published in 2010, second edition.). British Cactus & Succulent Society.
Chicago-Zitierstil (17. Ausg.)Pilbeam, John. Stapeliads (refreshed): A Gallery of 714 Pictures of All 59 Genera of This Popular Group of Succulent Plants. First published in 2010, second edition. Hornchurch, Essex: British Cactus & Succulent Society, 2014.
MLA-Zitierstil (9. Ausg.)Pilbeam, John. Stapeliads (refreshed): A Gallery of 714 Pictures of All 59 Genera of This Popular Group of Succulent Plants. First published in 2010, second edition. British Cactus & Succulent Society, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.