APA (7th ed.) Citation

Webb, B. W., Walling, D. E., & Trudgill, S. T. (1999). Water quality: Processes and policy. Wiley.

Chicago Style (17th ed.) Citation

Webb, Bruce W., Des E. Walling, and Stephen T. Trudgill. Water Quality: Processes and Policy. Chichester, [Eng.]: Wiley, 1999.

MLA (9th ed.) Citation

Webb, Bruce W., et al. Water Quality: Processes and Policy. Wiley, 1999.