Irwin, J. L. (1993). Neither Voice nor Heart Alone: German Lutheran Theology of Music in the Age of the Baroque. Peter Lang.
Lua i Stíl Chicago (17ú heag.)Irwin, Joyce L. Neither Voice nor Heart Alone: German Lutheran Theology of Music in the Age of the Baroque. New York u. a.: Peter Lang, 1993.
Lua MLA (8ú heag.)Irwin, Joyce L. Neither Voice nor Heart Alone: German Lutheran Theology of Music in the Age of the Baroque. Peter Lang, 1993.
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