{"contributors":[{"last":"Beethoven","middle":"van","first":"Ludwig","function":"author"},{"last":"Bülow","middle":"von","first":"Hans","function":"author"},{"last":"J. G. Cotta'sche Buchhandlung Nachfolger.","function":"author"}],"style":"apa","source":"book","book":{"":""},"oclc":"903349841","pubnonperiodical":{"year":"1891","volume":"","publisher":"J. G. Cotta'sche Buchhandlung Nachfolger","city":"Stuttgart; Berlin","title":"Sonate : für das Pianoforte : Op. 90 = Sonata for the pianoforte : Op. 90"},"datasource":"http:\/\/www.worldcat.org","pubtype":{"main":"pubnonperiodical"}}