North American AmphibiansDavid M. Green, Gary S. Casper, Michael Lannoo · First published 2014Open the Tome
Amphibian and Reptile Inventory of Sleeping Bear Dunes National LakeshoreGary S. Casper, Thomas G. Anton, National Park Service Staff · First published 2008Open the Tome
Geographic distributions of the amphibians and reptiles of WisconsinGary S. Casper · First published 1996Open the Tome
