APA (7th ed.) Citation

Tarling, D. H., & Tarling, M. P. (1977). Continental drift: A study of the earth's moving surface (2nd ed.). Penguin.

Chicago Style (17th ed.) Citation

Tarling, D. H., and Maureen P. Tarling. Continental Drift: A Study of the Earth's Moving Surface. 2nd ed. Harmondsworth: Penguin, 1977.

MLA (9th ed.) Citation

Tarling, D. H., and Maureen P. Tarling. Continental Drift: A Study of the Earth's Moving Surface. 2nd ed. Penguin, 1977.