The New Holistic Herbal, by David Hoffman, Barnes and Noble Books, New York, U.S.A., 1995. ISBN 1-36619-857-7
The Essential Book of Herbal Medicine, by Simon Y. Mills, Penguin Books, Canada Ltd. 10 Alcorn Avenue, Toronto, Ontario, Canada, M4V 3B2, 1991.
The New Age Herbalist, consulting editor Richard Mabey, Collier Books, Macmillan Publishing Company, 866 Third Avenue, New York 10022, 1988.
The Complete Medicinal Herbal, by Penelope Ody, Key Porter Books Limited, 70 The Esplanade, Toronto, Ontario, Canada, M5E 1R2, 1993, reprinted in 1994 and 1995
Herbs That Heal: Prescription for Herbal Healing, by Michael A. Weiner and Janet Weiner, Quantum Books, 6 Knoll Lane, Mill Valley, CA 94941, 1994
The Herb Book, by John Lust, Bantam Books, 1540 Broadway, New York, New York, 10036, 1974
Earl Mindell's Herb Bible, by Earl Mindell, Simon and Shuster/ Fireside Books, Rockerfeller Centre, 1230 Avenue of the Americas, New York, New York, 10020, 1992
The Illustrated Encyclopedia of Herbs: Their Medicinal and Culinary Uses, edited by Sarah Bunney, Chancellor Press, Reed Consumer Books Limited, Michelin House, 81 Fulham Road, London Sw3 6RB, 1984, reprinted 1992, 1993