Castleman, Michael The New Healing Herbs, Rodale Inc.  2001

Christopher, John R. ND., M.H., Cathy Gileadi Every Womans’s Herbal, Christopher Publications 1987

Christopher, John R. Dr. School of Natural Healing, Christopher Publications 1976 

Duke, James A. Ph.D. Handbook of Medicinal Herbs, CRC Press 2002

---. The Green Pharmacy, Rodale Press Inc. 1997

Grieve, Mrs. M. A Modern Herbal, Harcourt, Brace & Company 1931

Griggs, Barbara Green Pharmacy, Healing Arts Press 1997

Hawes, Zoe and Friends Herbal Journal, Pomegranate Communications, Inc. 2008

Kloss, Jethro Back to Eden, Lotus Press 1946

Pederson, Mark Nutritional Herbology, Wendell W. Whitman Company 2002