Trompf, G. (1979). Idea of historical recurrence in Western thought: From antiquity to the reformation. U.C.P.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTrompf, G.W. Idea of Historical Recurrence in Western Thought: From Antiquity to the Reformation. U.C.P, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTrompf, G.W. Idea of Historical Recurrence in Western Thought: From Antiquity to the Reformation. U.C.P, 1979.
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