APA (7th ed.) Citation

Allen, T. F. H., & Hoekstra, T. W. (1992). Toward a unified ecology. Columbia University Press.

Chicago Style (17th ed.) Citation

Allen, T. F. H., and T. W. Hoekstra. Toward a Unified Ecology. New York: Columbia University Press, 1992.

MLA (8th ed.) Citation

Allen, T. F. H., and T. W. Hoekstra. Toward a Unified Ecology. Columbia University Press, 1992.