Simms, Bryan R. "Composing with Tones: Five Piano Pieces, Op. 23, and Serenade, Op. 24." The Atonal Music of Arnold Schoenberg 1908–1923. : Oxford University Press, 2000-11-16. Oxford Scholarship Online. 2011-10-03. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128260.001.0001/acprof-9780195128260-chapter-8>.
Simms, B.(2000-11-16). Composing with Tones: Five Piano Pieces, Op. 23, and Serenade, Op. 24. In The Atonal Music of Arnold Schoenberg 1908–1923. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128260.001.0001/acprof-9780195128260-chapter-8.
Simms, Bryan R. "Composing with Tones: Five Piano Pieces, Op. 23, and Serenade, Op. 24." In The Atonal Music of Arnold Schoenberg 1908–1923. : Oxford University Press, 2000-11-16. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128260.001.0001/acprof-9780195128260-chapter-8.
Simms BR. Composing with Tones: Five Piano Pieces, Op. 23, and Serenade, Op. 24. In: Simms BR. The Atonal Music of Arnold Schoenberg 1908–1923. Oxford University Press; 2000. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128260.001.0001/acprof-9780195128260-chapter-8. Accessed May 22, 2013.