1. Tilgner S. Herbal Medicine from the Heart of the Earth. Wise Acres Press, Inc. Creswell, OR, 1999:63.

2. Feverfew. Lawrence Review of Natural Products. September, 1994.

3. Brown DJ. Herbal Prescriptions for Better Health. Prima Publishing, Rocklin, CA 1996:91-95.

4. AANP. Nature's Pharmacy- Your Guide to Healing Foods, Herbs, Supplements and Homeopathic Remedies. Publications International Ltd., Lincolnwood, IL 2001;130-131.

5. PDR for Herbal Medicines. Medical Economics Company Inc., Montvale, NJ. 2001

6. Hobbs C. Feverfew (Tanacetum parthenium). HerbalGram 1989;20:26-35.

7. Makheja AN and Bailery JM. A platelet phospholipase inhibitor from the medicinal herb feverfew (Tanacetum perthenium). Prostaglandisn, Leukotrienes Med 1982;8:653-660.

8. Cook WM.  The Physio-Medical Dispensatory:  a Treatise on Therapeutics, Materia  Medica and Pharmacy. Eclectic Medical Publications, Sandy, OR 1985 

9. Felter HW and Lloyd JU.  King's American Dispensatory, 18^th ed. Eclectic Medical Publications, Sandy, OR  1983

10. Johnson ES. Feverfew (overcoming common problems). Sheldon Press, London, UK 1984:42-55.

11. Johnson ES et al. BR Med J(Clin Res Ed) 1985;291(6495):569-573.

12. Hylands DM et al. Br Med J (Clin Res Ed) 1985;291(6502):1128.

13. Murphy JJ et al. Lancet 1988;2(8604):189-192.

14. Stephanovic M et al. Sci Nat 1988;23:23-40.

15. Kalodera et al. Pharmazie 1997;52(11):885-886.

16. Pattrick M et al. Ann Rheum Dis 1989;48(7):547-549.

17. Hall IH et al. J Pharm Sci 1978;67(9);1235-1239.

18. Keery RJ and Lumley P. Br J Pharmacol 1986;89:834.

19. Hancock K. Feverfew. Your headache may be over. Keats Publishing, New Canaan 1986:36,47-51.

20. Mills S and Bone K. Principles and Practice of Phytotherapy. Churchill Livingstone, Edinburgh, UK 2000:385-393.

21. Brinker F.  Herb Contraindications and Drug Interactions, 3^rd ed.  Eclectic Medical Publications, Sandy, OR 2001:71,146.