Duchhardt, H. From the Peace of Westphalia to the Congress of Vienna: Heinz Duchhardt. The Oxford handbook of the history of international law.(2012).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuchhardt, Heinz. "From the Peace of Westphalia to the Congress of Vienna: Heinz Duchhardt." The Oxford Handbook of the History of International Law.(2012) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रDuchhardt, Heinz. "From the Peace of Westphalia to the Congress of Vienna: Heinz Duchhardt." The Oxford Handbook of the History of International Law.(2012), .
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