"The Complete Book of Herbs. A practical guide to growing & using herbs" by Lesley Bremness, Published in association with National Trust, 1988

"Backyard Medicine" Harvest and Make Your Own Herbal Remedies, Julie Bruton-Seal, Matthew Seal, 2009

"Rosemary Gladstar's Medicinal Herbs" Edited  by Deborah Balmuth and Nancy Ringer, 2012 by Rosemary Gladstar