Margulis, L. ; Schwartz, K. V. (1998). Five Kingdoms: an illustrated guide to the Phyla of life on earth. 3rd edition. Freeman: New York, NY (USA). ISBN 0-7167-3027-8. xx, 520 pp.
The Global Biodiversity Information Facility:
GBIF Backbone Taxonomy, 2013-07-01.
Accessed via http://www.gbif.org/species/7326344 on 2015-02-01
This backbone name usage exists because it was found in another checklist at the time the backbone was built. The primary source name usage has since been removed from the portal.