APA (7th ed.) Citation

Gregory, K. J., & Lewin, J. (2014). The basics of geomorphology key concepts / Kenneth J. Gregory & John Lewin: Key concepts. SAGE. https://doi.org/10.4135/9781473909984

Chicago Style (17th ed.) Citation

Gregory, K. J., and John Lewin. The Basics of Geomorphology Key Concepts / Kenneth J. Gregory & John Lewin: Key Concepts. Los Angeles: SAGE, 2014. https://doi.org/10.4135/9781473909984.

MLA (9th ed.) Citation

Gregory, K. J., and John Lewin. The Basics of Geomorphology Key Concepts / Kenneth J. Gregory & John Lewin: Key Concepts. SAGE, 2014. https://doi.org/10.4135/9781473909984.

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