APA (7th ed.) Citation

Gregory, K. J. (2010). The Earth's land surface: Landforms and processes in geomorphology. Sage.

Chicago Style (17th ed.) Citation

Gregory, K. J. The Earth's Land Surface: Landforms and Processes in Geomorphology. Los Angeles: Sage, 2010.

MLA (9th ed.) Citation

Gregory, K. J. The Earth's Land Surface: Landforms and Processes in Geomorphology. Sage, 2010.

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