D. Hoffmann

Comprehensive Insect Physiology, Biochemistry and Pharmacology

W. J. Bell, G. Hoyle, P. Usherwood, 1985 .

Medical Herbalism: The Science and Practice of Herbal Medicine

D. Hoffmann, 2003 .

The New Holistic Herbal

D. Hoffmann, 1991 .

Holistic herbal : a safe and practical guide to making and using herbal remedies/ David Hoffmann

D. Hoffmann, 2002 .

CHAPTER 3 – Fundamental Principles of Herbal Medicine

David Hoffmann, Aviva Romm, Lisa Ganora, 2010 .