Παραπομπή σε μορφή APA (7η εκδ.)

Engels, F. (1972). The origin of the family, private property, and the state. International Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Engels, Frederick. The Origin of the Family, Private Property, and the State. New York: International Publishers, 1972.

Παραπομπή σε μορφή MLA (9th εκδ.)

Engels, Frederick. The Origin of the Family, Private Property, and the State. International Publishers, 1972.