Cita APA (7a ed.)

Donovan, S. K. (1989). MASS extinctions: Processes and evidence. Columbia University Press.

Cita Chicago Style (17a ed.)

Donovan, Stephen K. MASS Extinctions: Processes and Evidence. New York: Columbia University Press, 1989.

Cita MLA (8a ed.)

Donovan, Stephen K. MASS Extinctions: Processes and Evidence. Columbia University Press, 1989.