↑ The Regency Kingdom has been referred to as a puppet state by Norman Davies in Europe: A history (Google Books, p. 910); by Jerzy Lukowski and Hubert Zawadzki in A Concise History of Poland (Google Books, p. 218); by Piotr J. Wroblel in Chronology of Polish History and Nation and History (Google Books, p. 454); and by Raymond Leslie Buell in Poland: Key to Europe (Google Books, p. 68: "The Polish Kingdom... was merely a pawn [of Germany]").
↑ A State of Nations: Empire and Nation-Making in the Age of Lenin and Stalin by Ronald Grigor Suny, and Terry Martin, Oxford University Press 2001, page 126: "To wall off this space, German planners discussed establishing an ethnically cleansed border strip in Poland, cleared of all Slavs and settled by ethnic Germans. Ober Ost officials deported large segments of the local population"
↑ Aviel Roshwald. Ethnic Nationalism and the Fall of Empires: Central Europe, the Middle East and Russia, 1914-23. Routledge, 2002. P. 117.
