Citation

USDA 2011: United States Department of Agriculture, Agricultural Research Service, National Genetic Resources Program. Germplasm Resources Information Network (GRIN) [Internet]. Beltsville (MD): National Germplasm Resources Laboratory. [Tribulus terrestris L. Last updated 2011 May 09; Accessed 2012 April 30]. Available from: http://www.ars-grin.gov/cgi-bin/npgs/html/tax_search.pl