APA (7th ed.) Citation

Pimm, S. L. (1991). The balance of nature ?: Ecological issues in the conservation of species and communities. The university of Chicago Press.

Chicago Style (17th ed.) Citation

Pimm, Stuart L. The Balance of Nature ?: Ecological Issues in the Conservation of Species and Communities. Chicago and London: The university of Chicago Press, 1991.

MLA (8th ed.) Citation

Pimm, Stuart L. The Balance of Nature ?: Ecological Issues in the Conservation of Species and Communities. The university of Chicago Press, 1991.