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Izvornik
Bekenntnis. Willibald Gorl. A Cappella sheet music. Bekenntnis composed by Willibald Gorl. For TTBB Men's Choir a cappella. Published by Tonos Music. TO.231. ISBN M-2015-1310-2.
Prijevod
Ispovijest. Willibald Gorl. Cappella note. Bekenntnis composed by Willibald Gorl. Za TTBB Muška zbora capella. Objavio Tonos glazbe. TO.231. ISBN M-2015-1310-2.