Παραπομπή σε μορφή APA (7η εκδ.)

Ruby, R. H., & Brown, J. A. (1992). A guide to the Indian tribes of the Pacific Northwest (Rev. ed.). University of Oklahoma Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ruby, Robert H., και John Arthur Brown. A Guide to the Indian Tribes of the Pacific Northwest. Rev. ed. Norman and London: University of Oklahoma Press, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ruby, Robert H., και John Arthur Brown. A Guide to the Indian Tribes of the Pacific Northwest. Rev. ed. University of Oklahoma Press, 1992.