In the USA:

• Handbook of Frogs and Toads of the United States and Canada (Comstock Classic Handbooks)
• The Fascinating World of Frogs and Toads
• Frogs & Toads of the World (Of the World Series)
• Frogs and Toads and Tadpoles, Too! (Rookie Read-About Science)

In the UK:

• Frogs, Toads and Treefrogs
• Frogs and Toads
• Frogs and Toads of the World
• Frogs and Toads of the Natal Drakensberg
• A Guide to the Frogs and Toads of Belize