APA (7th ed.) Zitazioa

Spengler, O. (1918). The decline of the west. AUWSF.

Chicago Style (17th ed.) Zitazioa

Spengler, Oswald. The Decline of the West. London: AUWSF, 1918.

MLA (9th ed.) Zitazioa

Spengler, Oswald. The Decline of the West. AUWSF, 1918.