Guitar Tunings Database (2013). "CCGCEG Guitar Tuner". CCGCEG: Open C via harmonic overtones. Archived from the original on 10 March 2013. Retrieved 20 February 2013.
Guitar Tunings Database (2013). "CCGCEG Guitar Tuner". CCGCEG: Open C via harmonic overtones. Archived from the original on 10 March 2013. Retrieved 20 February 2013.
Sethares (2001, p. 16) Sethares, Bill (2001). "Regular tunings"(PDF). Alternate tuning guide. Madison, Wisconsin: University of Wisconsin; Department of Electrical Engineering. pp. 52–67. Retrieved 19 May 2012.
Sethares (2001, p. 52) Sethares, Bill (2001). "Regular tunings"(PDF). Alternate tuning guide. Madison, Wisconsin: University of Wisconsin; Department of Electrical Engineering. pp. 52–67. Retrieved 19 May 2012.
Sethares (2001, pp. 54–55) Sethares, Bill (2001). "Regular tunings"(PDF). Alternate tuning guide. Madison, Wisconsin: University of Wisconsin; Department of Electrical Engineering. pp. 52–67. Retrieved 19 May 2012.
Sethares (2001, pp. 58–59) Sethares, Bill (2001). "Regular tunings"(PDF). Alternate tuning guide. Madison, Wisconsin: University of Wisconsin; Department of Electrical Engineering. pp. 52–67. Retrieved 19 May 2012.
Sethares (2001, pp. 56) Sethares, Bill (2001). "Regular tunings"(PDF). Alternate tuning guide. Madison, Wisconsin: University of Wisconsin; Department of Electrical Engineering. pp. 52–67. Retrieved 19 May 2012.
Sethares (2001, 'The mandoguitar tuning' 62–63) Sethares, Bill (2001). "Regular tunings"(PDF). Alternate tuning guide. Madison, Wisconsin: University of Wisconsin; Department of Electrical Engineering. pp. 52–67. Retrieved 19 May 2012.
Sethares (2001, 'The mandoguitar tuning', pp. 62–63) Sethares, Bill (2001). "Regular tunings"(PDF). Alternate tuning guide. Madison, Wisconsin: University of Wisconsin; Department of Electrical Engineering. pp. 52–67. Retrieved 19 May 2012.