Spengler, O. (1980). The decline of the West. London: Geoge Allen & Urwin.
Chicago Style CitationSpengler, Oswald. The Decline of the West. London: Geoge Allen & Urwin, 1980.
Cita MLASpengler, Oswald. The Decline of the West. London: Geoge Allen & Urwin, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.