14. Musical meaning in Beethoven: markedness, correlation, and interpretation Hatten, Robert S., Bloomington, Indiana : Indiana University Press, 2004. GRS103
17. Classic music: expression, form, and style Ratner, Leonard G., New York : Schirmer Books ; 1985. GRS103
18. Sound and symbol Zuckerkandl, Victor, Princeton, N.J. : Princeton University Press, [1956-1969] GRS103