Encyclopedia of virology/ 
edited by B.W.J. Mahy and M.H.V. van Regenmortel. 
 - 3rd ed. 
 - Amsterdam:  Elsevier,   2008. 
 - Online resource 
<br/><br/><label>ISBN: </label>9780123744104 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Immunology and Microbiology