Παραπομπή σε μορφή APA (7η εκδ.)

Keith, N. W., & Keith, N. Z. (1988). New perspectives on social class and socioeconomic development in the periphery. Greenwood Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Keith, Nelson W., και Novella Zett Keith. New Perspectives on Social Class and Socioeconomic Development in the Periphery. New York: Greenwood Press, 1988.

Παραπομπή σε μορφή MLA (8th εκδ.)

Keith, Nelson W., και Novella Zett Keith. New Perspectives on Social Class and Socioeconomic Development in the Periphery. Greenwood Press, 1988.