APA (7th ed.) Citation

Gifford, C. (2008). 10 explorers who changed the world (1. publ.). Kingfisher.

Chicago Style (17th ed.) Citation

Gifford, Clive. 10 Explorers Who Changed the World. 1. publ. London [u.a.]: Kingfisher, 2008.

MLA (9th ed.) Citation

Gifford, Clive. 10 Explorers Who Changed the World. 1. publ. Kingfisher, 2008.