Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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