(1973). Focuson environmental geology: A collection of case histories and readings from original sources. New York: Oxford University Press.
Citação norma ChicagoFocuson Environmental Geology: A Collection of Case Histories and Readings From Original Sources. New York: Oxford University Press, 1973.
Citação norma MLAFocuson Environmental Geology: A Collection of Case Histories and Readings From Original Sources. New York: Oxford University Press, 1973.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.