"Potoxylon Kosterm". Tropicos.org. Missouri Botanical Garden. Retrieved 17 November 2011.
umsl.edu
http://www.umsl.edu/~renners/Chanderbali_et_alAMBG2001.pdf Phylogeny and Historical Biogeography of Lauraceae: Evidence from the Chloroplast and Nuclear Genomes, Andre S. Chanderbali, Henk van der Werff and Susanne S. Renner, Annals of the Missouri Botanical Garden, Vol. 88, No. 1 (Winter, 2001), pp. 104-134