Citazione Stile APA (7a Edizione)

Engels, F. (1970). The origin of the family, private property and the state.

Citazione stile Chigago Style (17a edizione)

Engels, Frederick. The Origin of the Family, Private Property and the State. Zurich, 1970.

Citatione MLA (9a ed.)

Engels, Frederick. The Origin of the Family, Private Property and the State. 1970.