APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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