APA (7th ed.) Zitazioa
Spengler, O. (1965). The decline of the West (Primera edición de Modern Library.). Modern Library.
Chicago Style (17th ed.) Zitazioa
Spengler, Oswald. The Decline of the West. Primera edición de Modern Library. Nueva York: Modern Library, 1965.
MLA (9th ed.) Zitazioa
Spengler, Oswald. The Decline of the West. Primera edición de Modern Library. Modern Library, 1965.
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