एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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