APA (7th ed.) Citation

Perrier, E. (1925). Earth before history: Man's origin and the origin of earth. Kegan Paul.

Chicago Style (17th ed.) Citation

Perrier, Edmond. Earth Before History: Man's Origin and the Origin of Earth. Kegan Paul, 1925.

MLA (9th ed.) Citation

Perrier, Edmond. Earth Before History: Man's Origin and the Origin of Earth. Kegan Paul, 1925.

Warning: These citations may not always be 100% accurate.