author = { Schumann, Robert Herttrich, Ernst AND Schilde, Klaus },

title = { Vier Fugen opus 72 = Four fugues op. 72 },

edition = { Urtext } ,

publisher = {Henle},

year = {c 2009},

address = { München },

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