Diggelmann, O. The Periodization of the History of International Law: Oliver Diggelmann. The Oxford handbook of the history of international law.(2012).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDiggelmann, Oliver. "The Periodization of the History of International Law: Oliver Diggelmann." The Oxford Handbook of the History of International Law.(2012) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रDiggelmann, Oliver. "The Periodization of the History of International Law: Oliver Diggelmann." The Oxford Handbook of the History of International Law.(2012), .
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