APA (7th ed.) Citation

Schopf, J. W. (1983). Earth's earliest biosphere: Its origin and evolution. Princeton University Press.

Chicago Style (17th ed.) Citation

Schopf, J. William. Earth's Earliest Biosphere: Its Origin and Evolution. Princeton, N.J: Princeton University Press, 1983.

MLA (9th ed.) Citation

Schopf, J. William. Earth's Earliest Biosphere: Its Origin and Evolution. Princeton University Press, 1983.