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.
Precaución: Estas citas no son 100% exactas.