| 18CINEOLE |
Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| ALPHAPINENE |
Michael Castleman 1991. The Healing Herbs. Rodale Press, Emmaus, PA 436 pp. |
| CARVACROL |
Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |
| LIMONENE |
Duke, 1992 * |
| THYMOL |
Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. |