author = { Bach, Johann Christoph Friedrich Wittenbecher, Otto },

title = { Sechs Sonaten 4 Nr. 4 },

edition = { Partitur, Stimme } ,

publisher = {Zimmermann},

year = {[ca. 1980]},

abstract = {c 1925},

address = { Frankfurt am Main },

url = { http://slubdd.de/katalog?TN_libero_mab2 }