WALKER, Timothy. Obsession is Good. Sibbaldia: the International Journal of Botanic Garden Horticulture, [S. l.], n. 3, p. 3–5, 2005. DOI: 10.24823/Sibbaldia.2005.106. Disponível em: https://journals.rbge.org.uk/rbgesib/article/view/106. Acesso em: 26 apr. 2024.