Παραπομπή σε μορφή APA (7η εκδ.)

Engels, F. (1978). The origin of the family, private property and the state: In the light of the researches of Lewis H. Morgan. International Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Engels, Friedrich. The Origin of the Family, Private Property and the State: In the Light of the Researches of Lewis H. Morgan. New York: International Publishers, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Engels, Friedrich. The Origin of the Family, Private Property and the State: In the Light of the Researches of Lewis H. Morgan. International Publishers, 1978.