Cita APA (7a ed.)

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.