APA (7th ed.) Citation

Ehrlich, R. (2001). Nine crazy ideas in science: A few might even be true. Princeton University Press.

Chicago Style (17th ed.) Citation

Ehrlich, Robert. Nine Crazy Ideas in Science: A Few Might Even Be True. Princeton, N.J.: Princeton University Press, 2001.

MLA (9th ed.) Citation

Ehrlich, Robert. Nine Crazy Ideas in Science: A Few Might Even Be True. Princeton University Press, 2001.