Webby, B. D. (2004). The great Ordovician biodiversification event. Columbia University Press.
Cita Chicago Style (17a ed.)Webby, B. D. The Great Ordovician Biodiversification Event. New York: Columbia University Press, 2004.
Cita MLA (8a ed.)Webby, B. D. The Great Ordovician Biodiversification Event. Columbia University Press, 2004.
Precaución: Estas citas no son 100% exactas.