Cita APA (7a ed.)

Gould, S. J. (1983). Hen's teeth and horse's toes. W. W. Norton.

Cita Chicago Style (17a ed.)

Gould, Stephen Jay. Hen's Teeth and Horse's Toes. New York: W. W. Norton, 1983.

Cita MLA (8a ed.)

Gould, Stephen Jay. Hen's Teeth and Horse's Toes. W. W. Norton, 1983.