- Cărți electroniceA Natural History of AmphibiansRobert C. Stebbins
- Cărți electroniceReptiles and Amphibians of the San Francisco Bay RegionRobert C. Stebbins
- Cărți electroniceCalifornia Amphibians and ReptilesRobert C. Stebbins
- Cărți electroniceThe Lives of Desert Animals in Joshua Tree National MonumentAlden H. Miller
- Cărți electroniceSerie: California Natural History GuidesSam Hinton