Gaya APA

Rafferty, J, P. (2010). Geochronology , Dating, and Precambrian Time: The Beginning of the World As We Know It . New York: Britannica.

Gaya MLA

Rafferty, John, P. "Geochronology , Dating, and Precambrian Time: The Beginning of the World As We Know It". New York: Britannica, 2010. Text.