The Regents of the University of Michigan and its licensors
bibliographic citation
Hammond, G. and J. Burch 2000. "Physidae" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Physidae.html
author
George Hammond, Animal Diversity Web
author
John B. Burch, Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor
