1. Encyclopedia of Common Natural Ingredients used in Food, Drugs and Cosmetics;Leung,1996
2. Chinese Drugs of Plant Origin Chemistry, Pharmacology and Use in Traditional and Modern Medicine;Tang,1992
3. American Herbal Pharmacopoeia and Therapeutic Compendium, Astragalus Root, Astragalus membranaceus and Astragalus membranaceus var. mongholicus, Analytical, Quality Control, and Therapeutic Monograph;Upton,1999
4. Antimicrobial isoflavans from Astragalus species