1. A Clinical Guide to Blending Liquid Herbs;Bone,2003
2. Complex Herbs, Complete Medicines;Brinker,2004
3. Trease and Evans Pharmacognosy;Evans,2002
4. Felter HW, Lloyd JU. King's American Dispensatory (1898). Available at: http://www.henriettesherbal.com (provided free on the Web on Henriette Kress's Herbal Homepage).
5. Hoare's Veterinary Materia Medica and Therapeutics;Grieg,1942