Παραπομπή σε μορφή APA (7η εκδ.)

Karelis, C. (2007). The persistence of poverty: Why the economics of the well-off can't help the poor. Yale University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Karelis, Charles. The Persistence of Poverty: Why the Economics of the Well-off Can't Help the Poor. New Haven: Yale University Press, 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Karelis, Charles. The Persistence of Poverty: Why the Economics of the Well-off Can't Help the Poor. Yale University Press, 2007.