Original: Encyclopedia of Mechanical Musical Instruments. Composed by Bernd Enders, Christof Reuter, and Rolf Jacobi. Bernd Enders. German.
Oversettelse: Encyclopedia of Mechanical Musikkinstrumenter. Komponert av Bernd Enders, Christof Reuter, og Rolf Jacobi. Tyske. Norsk. HL.49016255.