In the USA:

• A Field Guide to Reptiles & Amphibians of Eastern & Central North America (Peterson Field Guide Series)

• A Field Guide to Western Reptiles and Amphibians : Field Marks of All Species in Western North America, Includung Baja California (Petersons Field Guide Series)

• The National Audubon Society Field Guide to North American Reptile and Amphibians

• The Encyclopedia of Snakes

• Snakes : A Natural History

• Snakes of the World (Of the World Series)

• Snakes in Question : The Smithsonian Answer Book

• Snakes : The Evolution of Mystery in Nature

• The Snake Scientist (Scientists in the Field)

• Snake: The Essential Visual Guide to the World of Snakes

• The Snake Almanac : A Fully Illustrated Natural History of Snakes Worldwide

• Rattlesnake : Portrait of a Predator

• Extremely Weird Snakes

In the UK:

• The Snake Almanac : A Fully Illustrated Natural History of Snakes Worldwide

• Snakes

• Nature Watch: Snakes

• Encyclopedia Of Snakes

• Rattlesnake : Portrait of a Predator

• Extremely Weird Snakes

• Snakes on the Hunt

• Snakes (Endangered Animals & Habitats)