1. Neoclerodane diterpenoids from Teucrium polium;Bedir;Phytochemistry,1999
2. Claude-Lafontaine, A., Ruillard, M., Cassan, J., Azzaro, M., 1976. New terpene derivatives, constituents of the essential oil of Cascarilla. Bull. Soc. Chim. Fr., 88–90.
3. CRC Handbook of Medicinal Herbs;Duke,1984
4. Greenish, H.G., 1924. A Text Book of Materia Medica, 4th Edition. J&A Churchill, London.
5. The constituents of Cascarilla oil (Croton eluteria Bennett);Hagedorn;Flavour and Fragrance Journal,1991