APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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