Barham, Ellie, Suzanne Sharrock, Charles Lane, and Richard Baker. “An International Plant Sentinel Network”.
Sibbaldia: the International Journal of Botanic Garden Horticulture, no. 13 (November 10, 2015): 83–98. Accessed July 22, 2025.
https://journals.rbge.org.uk/rbgesib/article/view/75.