Original tekst: Encyclopedia of Mechanical Musical Instruments. Composed by Bernd Enders, Christof Reuter, and Rolf Jacobi. Bernd Enders. German.
Oversættelse: Encyclopedia of Mechanical Musikinstrumenter. Komponeret af Bernd Enders, Christof Reuter, og Rolf Jacobi. Engelsk. HL.49016255.