"Genus: Bursera Jacq. ex L."Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. Archived from the original on 2009-05-07. Retrieved 2010-11-18.
"GRIN Species Records of Bursera". Germplasm Resources Information Network. United States Department of Agriculture. Archived from the original on 2009-01-20. Retrieved 2010-11-18.
"Genus: Bursera Jacq. ex L."Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. Archived from the original on 2009-05-07. Retrieved 2010-11-18.
"GRIN Species Records of Bursera". Germplasm Resources Information Network. United States Department of Agriculture. Archived from the original on 2009-01-20. Retrieved 2010-11-18.