«Koelreuteria Laxm.». Germplasm Resources Information Network. United States Department of Agriculture, 29-03-2006. Arxivat de l'original el 2009-05-07. [Consulta: 19 gener 2010].
web.archive.org
«Koelreuteria Laxm.». Germplasm Resources Information Network. United States Department of Agriculture, 29-03-2006. Arxivat de l'original el 2009-05-07. [Consulta: 19 gener 2010].