Holger Petersen (30 September 2011). Talking Music. Insomniac Press. pp. 93–. ISBN978-1-55483-058-9. Archived from the original on 8 December 2016. Retrieved 13 March 2016.
Holger Petersen (30 September 2011). Talking Music. Insomniac Press. pp. 93–. ISBN978-1-55483-058-9. Archived from the original on 8 December 2016. Retrieved 13 March 2016.