*[http://www.ipni.org/ipni/simplePlantNameSearch.do?find_wholeName=Quercus%20suber&output_format=normal&query_type=by_query&back_page=query_ipni.html IPNI]
*[http://mansfeld.ipk-gatersleben.de/apex/f?p=185:46:3811121890674::NO::module,mf_use,source,akzanz,rehm,akzname,taxid:mf,,botnam,0,,Quercus%20suber,17870 Mansfeld]
*[http://herb.umd.umich.edu/herb/search.pl?searchstring=Quercus%20suber Moerman, Native American Ethnobotany]
*[http://www.plantnames.unimelb.edu.au/Sorting/Quercus.html Multilingual Plant Name Database]
*[http://www.theplantlist.org/tpl1.1/search?q=Quercus+suber Plant List]