Cita APA (7a ed.)

Knoll, A. H. (2005). Life on a young planet: The fist three billion years of evolution on earth (4th pr.). Princeton university press.

Cita Chicago Style (17a ed.)

Knoll, Andrew H. Life on a Young Planet: The Fist Three Billion Years of Evolution on Earth. 4th pr. Princeton: Princeton university press, 2005.

Cita MLA (8a ed.)

Knoll, Andrew H. Life on a Young Planet: The Fist Three Billion Years of Evolution on Earth. 4th pr. Princeton university press, 2005.