ISBN 3-89508-238-4**Official Director of the Authority for the Prussian Palaces and Gardens of Berlin-Brandenburg: "Das Neue Palais von Sanssouci", first edition, Potsdam 2001.
ISBN 3-89508-238-4**Official Director of the Authority for the Prussian Palaces and Gardens of Berlin-Brandenburg: "Das Neue Palais von Sanssouci", first edition, Potsdam 2001.