Diocese Berlin-Brandenburg". Selbständige Evangelisch-Lutherische Kirche. Archived from the original on 28 March 2008. Retrieved 19 August 2008. "Berlin's mosques"
Rückert, Thomas Drachenberg (ed.): Kirche in der Stadt. Die Marienkirche in Bernau und ihre Ausstattung. Lukas Verlag, Berlin 2017. p. 218 Orgel der Marienkirche
Ritschl was born in Berlin. His father, Georg Karl Benjamin Ritschl (1783–1858), became in 1810 a pastor at the church of St Mary in Berlin, and from 1827
[Frederick William IV of Prussia. Politics – Art – Ideal] (in German). Berlin: Lukas-Verlag. p. 26. ISBN 978-3-86732-176-1. Clark 2008, p. 500. Kroll, Frank-Lothar