Engels, F. (1907). Landmarks of scientific socialism: "anti-Duehring". Chicago: C.H. Kerr & Company.
Dyfyniad Arddull ChicagoEngels, Friedrich. Landmarks of Scientific Socialism: "anti-Duehring". Chicago: C.H. Kerr & Company, 1907.
Dyfyniad MLAEngels, Friedrich. Landmarks of Scientific Socialism: "anti-Duehring". Chicago: C.H. Kerr & Company, 1907.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.