APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.