1. Economic Botany: a Text Book of Useful Plants and Plant Products;Hill,1989
2. Medicinal plants used in Kırklareli province (Turkey);Kültür;J. Ethnopharmacol.,2007
3. Traditional ethnobotanical knowledge about medicinal plants used for external therapies in Alasehir, Turkey;Ugulu;Int. J. Med. Aromatic Plants,2011
4. How many species of seed plants are there?;Govaerts;Taxon,2001
5. Impact of cultivation and gathering of medicinal plants on biodiversity: global trends and issues;Schippmann,2002