1. The Chemistry of Essential Oils;Parry,1908
2. A. H. Allen, “Commercial Organic Analysis,” Vol. III and IX, P. Blakiston’s Son & Company, Philadelphia. Pa.
3. Schimmel & Co., “Semi-Annual Reports,” Schimmel & Co., Miltitz near Leipzig.
4. The Volatile Oils;Gildemeister,1913
5. Methods of Analysis,1919