"Guaiacum officinale L."Germplasm Resources Information Network. United States Department of Agriculture. 2003-03-05. Archived from the original on 13 September 2009. Retrieved 2010-10-03.
gov.jm
jis.gov.jm
"National Symbols" (به انگلیسی). Jamaica Information Service. Archived from the original on 7 July 2012. Retrieved 7 July 2012.
web.archive.org
"Guaiacum officinale L."Germplasm Resources Information Network. United States Department of Agriculture. 2003-03-05. Archived from the original on 13 September 2009. Retrieved 2010-10-03.
webcitation.org
"National Symbols" (به انگلیسی). Jamaica Information Service. Archived from the original on 7 July 2012. Retrieved 7 July 2012.
