The Lang Elliott Audio Library: The Calls of Frogs and Toads : Breeding Calls and Sounds of 42 Different Species by Lang Elliott (2004, Trade Paperback) for sale online | eBay
Stream Red-eyed tree frog calling sound by SciDev.Net | Listen online for free on SoundCloud
Sounds of North American Frogs | Various Artists | Smithsonian Folkways Recordings
Free Download Frog Sound Effect | Download MP3 WAV | Pure Sound Effect | Sound effects, Sound, Pure products
2 minutes of Frog sounds-audio field recording Ontario Canada Spring 2015 - YouTube