Cita APA (7a ed.)

Erickson, J. (1995). A history of life on earth: Understanding our planet's past. Facts on File.

Cita Chicago Style (17a ed.)

Erickson, Jon. A History of Life on Earth: Understanding Our Planet's Past. New York: Facts on File, 1995.

Cita MLA (9a ed.)

Erickson, Jon. A History of Life on Earth: Understanding Our Planet's Past. Facts on File, 1995.