Cita APA (7th ed.)

Montgomery, D. R. (2012). Dirt: The erosion of civilizations (New ed.). University of California Press.

Cita Chicago (17th ed.)

Montgomery, David R. Dirt: The Erosion of Civilizations. New ed. Berkeley, Calif. ; London: University of California Press, 2012.

Cita MLA (9th ed.)

Montgomery, David R. Dirt: The Erosion of Civilizations. New ed. University of California Press, 2012.