Engels, F. (1949). The Part played by labour in the transition from ape to man.
Styl ChicagoEngels, Friedrich. The Part Played by Labour in the Transition from Ape to Man. Moscow, 1949.
Citace podle MLAEngels, Friedrich. The Part Played by Labour in the Transition from Ape to Man. 1949.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..