] References ^  a   b   Ritland, David B.; Lincoln P. Brower (11 April 1991).  “The viceroy butterfly is not a batesian mimic”  (abstract).  Nature   350  (6318): 497–498.  doi : 10.1038/350497a0 . Retrieved 2008-03-29 .   ^  a   b   http://www.cbif.gc.ca/spp_pages/butterflies/species/Viceroy_e.php ^   Fullard, James H.; Nadia Napoleone