Cita APA

Spengler, O. (1980). The decline of the West. London: Geoge Allen & Urwin.

Chicago Style Citation

Spengler, Oswald. The Decline of the West. London: Geoge Allen & Urwin, 1980.

Cita MLA

Spengler, Oswald. The Decline of the West. London: Geoge Allen & Urwin, 1980.

Atenció: Aquestes cites poden no estar 100% correctes.