1. Davis, P. H., Flora of Turkey and the East Aegean Islands, Vol. 1, Edinburgh University Press, Edinburgh, 1965.
2. Davis, P. H., Mill, R. R. and Tan, K., Flora of Turkey and the East Aegean Islands, Vol. 10, Edinburgh University Press, Edinburgh, 1988.
3. Baytop, T., Therapy with Medicinal Plants in Turkey, p. 187. University of Istanbul, Istanbul, 1984.
4. Mabry, T. J., Markham, K. R. and Thomas, M. B., The Systematic Identification of Flavonoids, Springer, Heidelberg, 1970.