APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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