APA (7th ed.) Citation

Twidale, C. R., & Foale, M. R. (1969). Landforms illustrated. T. Nelson.

Chicago Style (17th ed.) Citation

Twidale, C. R., and M. R. Foale. Landforms Illustrated. Melbourne, Aust.: T. Nelson, 1969.

MLA (9th ed.) Citation

Twidale, C. R., and M. R. Foale. Landforms Illustrated. T. Nelson, 1969.