Gregory, K. J., & Walling, D. E. (1987). Human activity and environmental processes. Chichester : Wiley.
Chicago Style (17th ed.) CitationGregory, K. J., and D. E. Walling. Human Activity and Environmental Processes. Chichester : Wiley, 1987.
MLA (9th ed.) CitationGregory, K. J., and D. E. Walling. Human Activity and Environmental Processes. Chichester : Wiley, 1987.
Warning: These citations may not always be 100% accurate.