Paret, P. (1984). "The Enemy Within" - Max Liebermann as President of the Prussian Academy of Arts: By Peter Paret. Leo Baeck Inst..
Lua i Stíl Chicago (17ú heag.)Paret, Peter. "The Enemy Within" - Max Liebermann as President of the Prussian Academy of Arts: By Peter Paret. New York: Leo Baeck Inst., 1984.
Lua MLA (8ú heag.)Paret, Peter. "The Enemy Within" - Max Liebermann as President of the Prussian Academy of Arts: By Peter Paret. Leo Baeck Inst., 1984.
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