Rae, David. “The Value of Living Collection Catalogues and Catalogues Produced From the Royal Botanic Garden Edinburgh”. Sibbaldia: the International Journal of Botanic Garden Horticulture, no. 6 (October 31, 2008): 115–131. Accessed May 2, 2024. https://journals.rbge.org.uk/rbgesib/article/view/38.