Cita APA (7th ed.)

Gould, S. J., & Rose, S. (2007). The richness of life: The essential stephen jay gould. W.W.norton.

Cita Chicago (17th ed.)

Gould, Stephen Jay, i Steven Rose. The Richness of Life: The Essential Stephen Jay Gould. New York: W.W.norton, 2007.

Cita MLA (9th ed.)

Gould, Stephen Jay, i Steven Rose. The Richness of Life: The Essential Stephen Jay Gould. W.W.norton, 2007.