Franklin

MLA

Schulz, Volker, Rudolf Hänsel, and Varro E Tyler. Rational Phytotherapy : a Physician's Guide to Herbal Medicine. Third edition, fully revised and expanded. .

APA

Schulz, V., Hänsel, R., & Tyler, V. E. Rational phytotherapy : a physician's guide to herbal medicine. Third edition, fully revised and expanded. .

Chicago

Schulz, Volker, Rudolf Hänsel, and Varro E Tyler. Rational Phytotherapy: A Physician's Guide to Herbal Medicine. Third edition, fully revised and expanded.