Dmitri Shostakovich(PDF). Hamburg: Sikorski Musikverlage Hamburg. 2011. p. 139. Archived(PDF) from the original on 2 August 2020. Retrieved 3 November 2022.
Sikorski (2011). Dmitri Shostakovich(PDF). Hamburg: Sikorski Musikverlage Hamburg. p. 139. Archived(PDF) from the original on 2 August 2020. Retrieved 19 May 2022.
Dmitri Shostakovich(PDF). Hamburg: Sikorski Musikverlage Hamburg. 2011. p. 139. Archived(PDF) from the original on 2 August 2020. Retrieved 3 November 2022.
Sikorski (2011). Dmitri Shostakovich(PDF). Hamburg: Sikorski Musikverlage Hamburg. p. 139. Archived(PDF) from the original on 2 August 2020. Retrieved 19 May 2022.