Originalno: Piano Sonata, Op. 1. NX.PSC1021. Fantasies O. Piano sheet music. Piano Sonata, Op. 1. Fantasies O by Eva Knardahl. 1833-1897.
Prevod: Piano Sonata, op 1. Klavir note. Piano Sonata, op 1. Johannes Brahms. Poslušanje CD. Izdala Simax Classics. ISBN 7025560010217.