Collins, D. (2013). Music theory and its methods: Structures, challenges, directions. Peter Lang.
Lua i Stíl Chicago (17ú heag.)Collins, Denis. Music Theory and Its Methods: Structures, Challenges, Directions. Frankfurt am Main: Peter Lang, 2013.
Lua MLA (9ú heag.)Collins, Denis. Music Theory and Its Methods: Structures, Challenges, Directions. Peter Lang, 2013.
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