Cita APA (7a ed.)

Gould, S. J. (1977). Ever since Darwin: Reflections in natural history. W. W. Norton.

Cita Chicago Style (17a ed.)

Gould, Stephen Jay. Ever Since Darwin: Reflections in Natural History. New York: W. W. Norton, 1977.

Cita MLA (8a ed.)

Gould, Stephen Jay. Ever Since Darwin: Reflections in Natural History. W. W. Norton, 1977.