Cita APA (7th ed.)

Powell, J. L. (2015). Four revolutions in the earth sciences: From heresy to truth. Columbia University Press.

Cita Chicago (17th ed.)

Powell, James Lawrence. Four Revolutions in the Earth Sciences: From Heresy to Truth. New York: Columbia University Press, 2015.

Cita MLA (9th ed.)

Powell, James Lawrence. Four Revolutions in the Earth Sciences: From Heresy to Truth. Columbia University Press, 2015.