APA-čujuhus (7. p.)
Powell, J. L. (2015). Four revolutions in the earth sciences: From heresy to truth. Columbia University Press.
Chicago-čujuhus (17. p.)
Powell, James Lawrence. Four Revolutions in the Earth Sciences: From Heresy to Truth. New York: Columbia University Press, 2015.
MLA-čujuhus (9. p.)
Powell, James Lawrence. Four Revolutions in the Earth Sciences: From Heresy to Truth. Columbia University Press, 2015.
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