Pilbeam, J. (2013). A gallery of agaves: (including variegates) (First published in 2013, 2nd printing.). The British Cactus & Succulent Society.
Chicago-Zitierstil (17. Ausg.)Pilbeam, John. A Gallery of Agaves: (including Variegates). First published in 2013, 2nd printing. Hornchurch, Essex: The British Cactus & Succulent Society, 2013.
MLA-Zitierstil (9. Ausg.)Pilbeam, John. A Gallery of Agaves: (including Variegates). First published in 2013, 2nd printing. The British Cactus & Succulent Society, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.