Cornell Lab of Ornithology · HOUGHTON MIFFLIN
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Frog and Toad Calls of the Rocky Mountains | 978-0-938027-30-0 (0-938027-30-1) | 1999 | |
| The Frogs and Toads of North America: A Comprehensive Guide to Their Identification, Behavior, and Calls | 978-0-618-66399-6 (0-618-66399-1) | 2009 | Lang Elliott · Carl Gerhardt |