Symes, Peter, and Clare Hart. “The Climate Change Alliance: Botanic Garden Horticulturists As Agents for Change”. Sibbaldia: the International Journal of Botanic Garden Horticulture, no. 20 (June 4, 2021): 95–122. Accessed May 24, 2025. https://journals.rbge.org.uk/rbgesib/article/view/352.