Circle of fifths (English Wikipedia)

Johann David Heinichen, Neu erfundene und gründliche Anweisung (1711), p. 261
Lerdahl, Fred (2005). Tonal Pitch Space. New York: Oxford University Press. p. 42. ISBN 0195178297.

doi.org

Jensen 1992, pp. 306–307 Jensen, Claudia R. (Summer 1992). "A Theoretical Work of Late Seventeenth-Century Muscovy: Nikolai Diletskii's "Grammatika" and the Earliest Circle of Fifths". Journal of the American Musicological Society. 45 (2): 305–331. doi:10.2307/831450. JSTOR 831450.
McCartin 1998, p. 364. McCartin, Brian J. (November 1998). "Prelude to Musical Geometry". The College Mathematics Journal. 29 (5): 354–370. doi:10.1080/07468342.1998.11973971. JSTOR 2687250. Archived from the original on 2008-05-17. Retrieved 2008-07-29.

Jensen 1992, pp. 306–307 Jensen, Claudia R. (Summer 1992). "A Theoretical Work of Late Seventeenth-Century Muscovy: Nikolai Diletskii's "Grammatika" and the Earliest Circle of Fifths". Journal of the American Musicological Society. 45 (2): 305–331. doi:10.2307/831450. JSTOR 831450.
McCartin 1998, p. 364. McCartin, Brian J. (November 1998). "Prelude to Musical Geometry". The College Mathematics Journal. 29 (5): 354–370. doi:10.1080/07468342.1998.11973971. JSTOR 2687250. Archived from the original on 2008-05-17. Retrieved 2008-07-29.

Fraser, Peter A. (2001), The Development of Musical Tuning Systems (PDF), pp. 9, 13, archived from the original (PDF) on 1 July 2013, retrieved 24 May 2020

Oakes, Tim (June 1980). "Mike Oldfield". International Musician and Recording World. Retrieved 19 February 2021 – via Tubular.net.

Fraser, Peter A. (2001), The Development of Musical Tuning Systems (PDF), pp. 9, 13, archived from the original (PDF) on 1 July 2013, retrieved 24 May 2020
McCartin 1998, p. 364. McCartin, Brian J. (November 1998). "Prelude to Musical Geometry". The College Mathematics Journal. 29 (5): 354–370. doi:10.1080/07468342.1998.11973971. JSTOR 2687250. Archived from the original on 2008-05-17. Retrieved 2008-07-29.

Broekhuis, Rogier (2022-10-11). "Wheel of Fifths – Harmonic Function". Wheel of Fifths. Retrieved 2023-10-05.