Cita APA (7a ed.)

Switek, B. (2012). Written in stone: The hidden secrets of fossils and the story of life on earth. Icon.

Cita Chicago Style (17a ed.)

Switek, Brian. Written in Stone: The Hidden Secrets of Fossils and the Story of Life on Earth. London: Icon, 2012.

Cita MLA (9a ed.)

Switek, Brian. Written in Stone: The Hidden Secrets of Fossils and the Story of Life on Earth. Icon, 2012.