APA (7e ed.) Bronvermelding
Powell, J. L. (2015). Four revolutions in the earth sciences: From heresy to truth. Columbia University Press.
Chicago (17e ed.) Bronvermelding
Powell, James Lawrence. Four Revolutions in the Earth Sciences: From Heresy to Truth. New York: Columbia University Press, 2015.
MLA (9e ed.) Bronvermelding
Powell, James Lawrence. Four Revolutions in the Earth Sciences: From Heresy to Truth. Columbia University Press, 2015.
Let op: Deze citaties zijn niet altijd 100% accuraat.