Cita APA (7th ed.)

Gould, S. J. (1985). The Primary Source: Reflections in natural history. W.W. Norton & Company.

Cita Chicago (17th ed.)

Gould, Stephen Jay. The Primary Source: Reflections in Natural History. New York: W.W. Norton & Company, 1985.

Cita MLA (9th ed.)

Gould, Stephen Jay. The Primary Source: Reflections in Natural History. W.W. Norton & Company, 1985.