↑ "Genus: Zygophyllum L.". Germplasm Resources Information Network. United States Department of Agriculture. 2004-06-18. Retrieved 2010-10-12.
↑ Beier, B. -A.; Chase, M. W.; Thulin, M. (2003). "Phylogenetic relationships and taxonomy of subfamily Zygophylloideae (Zygophyllaceae) based on molecular and morphological data". Plant Systematics and Evolution240: 11. doi:10.1007/s00606-003-0007-0.
↑ "GRIN Species Records of Zygophyllum". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-12.