Setzer, M. C., D. M. Moriarity, R. O. Lawton, W. N. Setzer, G. A. Gentry, and W. A. Haber. “Phytomedicinal Potential of Tropical Cloudforest Plants from Monteverde, Costa Rica”. Revista De Biología Tropical, vol. 51, no. 3-4, Dec. 2003, pp. 647–674, https://revistas.ucr.ac.cr/index.php/rbt/article/view/15834.