University of Maryland Medical Center - UM Medical Center Complementary and Alternative Medicine Guide
- University of Maryland Medical Center
- 27 nov 2014
- http://umm.edu/health/medical/altmed
New York University - Langone Medical Center - NYU Langone Medical Center
- 21 nov 2014
- http://www.med.nyu.edu/
- http://www.med.nyu.edu/content?ChunkIID=33341
The Herb Book - The Herb Book
- John Lust
- 2014
- Dover Publications
- Dover Edition
- 623
Medicinal Plants of the World - Medicinal Plants of the World
- Ben-Erik van Wyk
- Michael Wink
- 2010
- Timber Press
- 4th
- 480
FAOSTAT - FAOSTAT
- Food and Agriculture Organization of the United Nations
- 02 oct 2014
- http://faostat3.fao.org/faostat-gateway/go/to/home/E
Encyclopedia of Herbal Medicine - Encyclopedia of Herbal Medicine
- Andrew Chevallier
- 2000
- Dorling Kindersley Adult
- 2nd
- 336
