Παραπομπή σε μορφή APA (7η εκδ.)

Choukas-Bradley, M., & Alexander, P. (1987). City of Trees: The complete field guide to the trees of Washington, D.C. (Rev. ed.). Johns Hopkins University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Choukas-Bradley, Melanie, και Polly Alexander. City of Trees: The Complete Field Guide to the Trees of Washington, D.C. Rev. ed. Baltimore: Johns Hopkins University Press, 1987.

Παραπομπή σε μορφή MLA (8th εκδ.)

Choukas-Bradley, Melanie, και Polly Alexander. City of Trees: The Complete Field Guide to the Trees of Washington, D.C. Rev. ed. Johns Hopkins University Press, 1987.