Manning, Peter. "The Voltage-Controlled Synthesizer." Electronic and Computer Music. : Oxford University Press, 2004-01-29. Oxford Scholarship Online. 2011-10-03. Date Accessed 25 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195144840.001.0001/acprof-9780195144840-chapter-6>.
Manning, P.(2004-01-29). The Voltage-Controlled Synthesizer. In Electronic and Computer Music. : Oxford University Press. Retrieved 25 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195144840.001.0001/acprof-9780195144840-chapter-6.
Manning, Peter. "The Voltage-Controlled Synthesizer." In Electronic and Computer Music. : Oxford University Press, 2004-01-29. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195144840.001.0001/acprof-9780195144840-chapter-6.
Manning P. The Voltage-Controlled Synthesizer. In: Manning P. Electronic and Computer Music. Oxford University Press; 2004. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195144840.001.0001/acprof-9780195144840-chapter-6. Accessed May 25, 2013.