A simple graph (including only simple lines and letters), which is a recreation of the original graph by Mikhail Mishaqa (from his work form the 1800s).
Shireen Maalouf
Maalouf, Shireen (2003). "Mikhā'il Mishāqa: Virtual Founder of the Twenty-Four Equal Quartertone Scale". Journal of the American Oriental Society. 123 (4): 835–840.