APA-Zitierstil (7. Ausg.)

Wignall, P. B. (2015). The worst of times: How life on earth survived eighty million years of extinctions. Princeton University Press.

Chicago-Zitierstil (17. Ausg.)

Wignall, Paul B. The Worst of Times: How Life on Earth Survived Eighty Million Years of Extinctions. Princeton, NJ: Princeton University Press, 2015.

MLA-Zitierstil (9. Ausg.)

Wignall, Paul B. The Worst of Times: How Life on Earth Survived Eighty Million Years of Extinctions. Princeton University Press, 2015.