(1)"The Language of the Modes: Studies in the History of Polyphonic Music" Frans Wiering, 2001, Routledge.
(2)"Guidelines for Style Analysis" Jan LaRue, 1970, Norton.
(3)"Stuides on the History of Musical Style" Arnold Salop, 1971, Wayne State University Press
(4)"Counterpoint" Walter Piston, 1947, Norton.
(5)"Double Counterpoint and Canon" Ebenezer Prout, 1969, Haskell House Publishes.
(6)"Materpieces of Music before 1750: An Anthology of Musical Examples from Gregorian Chant to J. S. Bach with Historical and Analitical Notes" Carl Parrish/John. F. Ohl, 1951, Norton.
(7)"Musical Form" Ebenezer Prout, 1971, Augener.
(8)"A Dictionary of Musical Themes" Harold Barlow/Sam Morgenstern, 1967, Ernest Benn.