APA (7th ed.) Citation

Schopf, J. W. (1999). Cradle of life: The discovery of earth's earliest fossils. Princeton University Press.

Chicago Style (17th ed.) Citation

Schopf, J. William. Cradle of Life: The Discovery of Earth's Earliest Fossils. Princeton, N.J.: Princeton University Press, 1999.

MLA (9th ed.) Citation

Schopf, J. William. Cradle of Life: The Discovery of Earth's Earliest Fossils. Princeton University Press, 1999.