APA (7th ed.) Citation

Hallam, A., & Wignall, P. B. (1997). Mass extinctions and their aftermath. Oxford University Press.

Chicago Style (17th ed.) Citation

Hallam, A., and P. B. Wignall. Mass Extinctions and Their Aftermath. Oxford, New York: Oxford University Press, 1997.

MLA (8th ed.) Citation

Hallam, A., and P. B. Wignall. Mass Extinctions and Their Aftermath. Oxford University Press, 1997.