Παραπομπή σε μορφή APA (7η εκδ.)

Engels, F. (1972). The origin of the family, private property and the state: In the light of the researches of Lewis H. Morgan. Progress 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. Moscow: Progress Publishers, 1972.

Παραπομπή σε μορφή MLA (8th εκδ.)

Engels, Friedrich. The Origin of the Family, Private Property and the State: In the Light of the Researches of Lewis H. Morgan. Progress Publishers, 1972.