Deutsche Historien /
Strindberg, August,1849-1912.
Schering, Emil.
Strindberg, August,1849-1912.Nachtigall von Wittenberg.
Strindberg, August,1849-1912.Gustav Adolf.
München ;  Leipzig :  Müller, 
1917.
Originally published as Näktergalen i Wittenberg. Gustaf Adolf.
Die Nachtigall von Wittenberg -- Gustav Adolf.