APA Edition Citation

Felix M. Gradstein and others & Gradstein, F. M. (2012). The geologic time scale 2012. Elsevier.

Chicago Edition Citation

Felix M. Gradstein and others and F. M. Gradstein. The Geologic Time Scale 2012. Amsterdam ; Boston: Elsevier, 2012.

MLA Edition Citation

Felix M. Gradstein and others and F. M. Gradstein. The Geologic Time Scale 2012. Elsevier, 2012.

Warning: These citations may not always be 100% accurate.