APA
Greg Powel, . (2018). Geotechnical Engineering and Soil Science. New York: larsen and keller.
Chicago
Greg Powel, . 2018. Geotechnical Engineering and Soil Science. New York: larsen and keller.
Harvard
Greg Powel, . (2018). Geotechnical Engineering and Soil Science. New York: larsen and keller.
MLA
Greg Powel, . Geotechnical Engineering and Soil Science. New York: larsen and keller. 2018.