Paul W. Knoll, "Forward: Tadeusz Manteuffel, The Man, The Historian, and Historiography," in Tadeusz Manteuffel, The Formation of the Polish State, The Period of Ducal Rule 963-1194, translated by Andrew Gorski (from Polska w okresie prawa ksiazecego 963-1194 in Historyk wobec historii [Warsaw, 1976—a selection of Manteuffel's writings]) (Detroit: Wayne State University Press, 1982), pp. 7–20.
