Miller, S C. <br/><br/>
Medicinal Plants of the World : Echinacea  Textual Documents 

 - 1st ed. 
 - New York  CRC Press  2012 
 - 276. 
<br/><br/><label>ISBN: </label>9780415288286   
<br/><br/><label>Subjects--Index Terms: </label>Medicinal Plants 
<br/><br/><label>Dewey Class. No.: </label>581.634  / MIL