1. The Audubon Society Field Guide to North American Repitles and Amphibians
   Resource Type: Book
   Published: 1979
   
2. A Field Guide to Eastern Forests
   Resource Type: Book
   Published: 1988
   A "second-generation" field guide to the ecology of the forests and fields of eastern North America.
3. Legacy
   The Natural History of Ontario
   Resource Type: Book
   Published: 1989
   A comprehensive, extensively illustrated natural history of Ontario, covering bedrock, soils, birds, mammals, insects, wildflowers, forests, prehistoric life, and much more.
4. A Place to Walk
   A Naturalist's Journal of the Lake Ontario Waterfront Trail
   Resource Type: Book
   Published: 1995
   Karstad, a naturalist and painter and her husband a herpetologist spent a spring and summer along the lake Ontario shoreline. The resulting product gives us a book filled with drawings, paintings and recordings of the wildlife, flora and fauna. There is also a history of human settlement along the lake and its impact on the natural environment.
5. Reptiles and Amphibians
   A Guide to Familiar American Species
   Resource Type: Book
   Published: 1956
   
6. Royal BC Museum
   Media Profile in Sources
   Resource Type: Organization
   
7. Senckenbergische Naturforschungsinstitut und Naturmuseum
   Media Profile in Sources
   Resource Type: Organization
   
8. World Frog Day
   Resource Type: Article
   Published: 2022
   

Experts on Amphibians in the Sources Directory

1. American Museum of Natural History
2. Natural History Museum
3. Senckenbergische Naturforschungsinstitut und Naturmuseum