Ulrich Theobald: The Feudal State of Zhao In: ChinaKnowledge.de – An Encyclopaedia on Chinese History, Literature and Art.
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Mark Edward Lewis: Warring states political history. In: Michael Loewe, Edward L. Shaughnessy, The Cambridge History of Ancient China: From the Origins of Civilization to 221 BC. Cambridge University Press, 1999. S. 596. Digitalisat
