(1973). Focuson environmental geology: A collection of case histories and readings from original sources. New York: Oxford University Press.
Trích dẫn kiểu ChicagoFocuson Environmental Geology: A Collection of Case Histories and Readings From Original Sources. New York: Oxford University Press, 1973.
MLA引文Focuson Environmental Geology: A Collection of Case Histories and Readings From Original Sources. New York: Oxford University Press, 1973.
警告:这些引文格式不一定是100%准确.