[1] Olive Jones and George Russell, The Black Perspective in Music, Vol. 2, No. 1 (Spring, 1974), pp. 63-74 , p.65.
[3] Aural Archetypes and Cyclic Perspectives in the Work of John Coltrane and Ancient Chinese Music Theory
Hafez Modirzadeh Vol. 21, No. 1 (Spring, 2001), pp. 75-106; Published by: Center for Black Music Research - Columbia College Chicago and University of Illinois Press, p.80