- Natural Remedies: Their Origins and Uses
- Herbs for Improved Digestion
- Herbs to Help You Breathe Freely
- Herbs for the Urinary Track
- The Green Pharmacy
- The Handbook of Clinically Tested Herbal Remedies [2 Volume Set]
- Herbal Products: Toxicology and Clinical Pharmacology
- The Complete Guide To Herbal Medicines
- The Herbal Pharmacy