Citazione APA

Hallam, A. (1989). Great geological controversies/2nd ed (2nd ed.). Oxford University Press.

Stile di citazione Chicago

Hallam, A. Great Geological Controversies/2nd Ed. 2nd ed. London: Oxford University Press, 1989.

Citazione MLA

Hallam, A. Great Geological Controversies/2nd Ed. 2nd ed. Oxford University Press, 1989.