1. Medicinal herbs for the treatment of rheumatic disorders—a survey of European herbals from the 16th and 17th century;Adams;Journal of Ethnopharmacology,2009
2. The Medicinal Flora of Britain and Northwestern Europe: A Field Guide, Including Plants Commonly Cultivated in the Region;Barker,2001
3. Herbal Medicines;Barnes,2002
4. British Herbal Medicine Association Scientific Committee, 1996. British Herbal Pharmacopoeia, British Herbal Medicine Association, Bristol.
5. A reassessment of the efficacy of Anglo-Saxon medicine;Brennessel;Anglo-Saxon England,2005