ENGELS, F. (1950). Socialism: Utopian and scientific. Allen & Unwin.
Dyfyniad Arddull ChicagoENGELS, Frederick. Socialism: Utopian and Scientific. London: Allen & Unwin, 1950.
Dyfyniad MLAENGELS, Frederick. Socialism: Utopian and Scientific. Allen & Unwin, 1950.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.