Alberto Federico de Prusia (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Alberto Federico de Prusia" in Spanish language version.

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books.google.com

Carl Wilhelm von Lancizolle (1828). Geschichte der Bildung des preussischen Staats. Erster Theil, vol. 1-2. Berlín y Stettin: Nicolaischen Buchhandlung. p. 474.
Stone, Daniel (2001). A History of East Central Europe. Seattle: University of Washington Press. p. 143. ISBN 9780295980935.