Spengler, O. (1918). The decline of the west. AUWSF.
Chicagoスタイル(17版)引用形式Spengler, Oswald. The Decline of the West. London: AUWSF, 1918.
MLA(9版)引用形式Spengler, Oswald. The Decline of the West. AUWSF, 1918.
警告: この引用は必ずしも正確ではありません.
APA(7版)引用形式