Verhoeven, Koen J.F., and Gabriel J.L. Beckers. “Canopy Farming: An Innovative Strategy for the Sustainable Use of Rain Forests”. Selbyana 20, no. 1 (January 4, 1999): 191–193. Accessed May 18, 2024. https://ojs.test.flvc.org/selbyana/article/view/120471.