APA (7th ed.) Citation

Tank, R. W. (1973). Focus on environmental geology: A collection of case histories and readings from original sources. Oxford University Press.

Chicago Style (17th ed.) Citation

Tank, Ronald Warren. Focus on Environmental Geology: A Collection of Case Histories and Readings from Original Sources. New York: Oxford University Press, 1973.

MLA (9th ed.) Citation

Tank, Ronald Warren. Focus on Environmental Geology: A Collection of Case Histories and Readings from Original Sources. Oxford University Press, 1973.