APA (7th ed.) Citation

Trudgill, S. T., & Roy, A. (2003). Contemporary meanings in physical geography: From what to why? Arnold.

Chicago Style (17th ed.) Citation

Trudgill, Stephen T., and André Roy. Contemporary Meanings in Physical Geography: From What to Why? London: Arnold, 2003.

MLA (9th ed.) Citation

Trudgill, Stephen T., and André Roy. Contemporary Meanings in Physical Geography: From What to Why? Arnold, 2003.