1. The Essential Oils. Robert E. Krieger Pub. Co., Florida, 1952, Vol. V, pp. 154-5.
2. Perfumery and Flavouring Synthetics III, Rev. edn. Allured Pub. Co. Wheaton, USA, 1975, p. 371.
3. The Essential Oils. Robert E. Krieger Pub. Co., Florida, 1952, Vol. I, pp. 10-12.