APA aipamena

Montgomery, D. R. (2007). Dirt: The erosion of civilizations. University of California Press.

Chicago Style aipamena

Montgomery, David R. Dirt: The Erosion of Civilizations. Berkeley: University of California Press, 2007.

MLA aipamena

Montgomery, David R. Dirt: The Erosion of Civilizations. University of California Press, 2007.