United Kingdom: Merlin Publications, 2011. Quarto, laminated boards, colour illustrations and photographs, maps.

This is an accessible guide to all species and subspecies of Gorilla, Chimpanzee, Orangutan and Gibbon. Each species account contains information on appearance, distribution, population size, conservation, breeding biology and ecology. Each account is laid out as a 2-page spread for easy cross-referencing. The title has been endorsed by the Jane Goodall Institute and The Orangutan Foundation.