O'Mara, P. (2007). A Chordal Concept for Jazz Guitar: Peter O'Mara (Rev. ed.). Advance Music.
Lua i Stíl Chicago (17ú heag.)O'Mara, Peter. A Chordal Concept for Jazz Guitar: Peter O'Mara. Rev. ed. [S.l.]: Advance Music, 2007.
Lua MLA (8ú heag.)O'Mara, Peter. A Chordal Concept for Jazz Guitar: Peter O'Mara. Rev. ed. Advance Music, 2007.
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