APA (7th ed.) Citation

Gould, S. J. (1991). Ever since Darwin: Reflections in natural history. Penguin.

Chicago Style (17th ed.) Citation

Gould, Stephen Jay. Ever Since Darwin: Reflections in Natural History. London [etc.]: Penguin, 1991.

MLA (9th ed.) Citation

Gould, Stephen Jay. Ever Since Darwin: Reflections in Natural History. Penguin, 1991.

Warning: These citations may not always be 100% accurate.