APA (7th ed.) Citation

Walker, C. H., Hopkin, S. P., & Sibly, R. M. (1996). Principles of ecotoxicology. Taylor & Francis.

Chicago Style (17th ed.) Citation

Walker, C. H., S. P. Hopkin, and R. M. Sibly. Principles of Ecotoxicology. London: Taylor & Francis, 1996.

MLA (8th ed.) Citation

Walker, C. H., et al. Principles of Ecotoxicology. Taylor & Francis, 1996.