Analysis of information sources in references of the Wikipedia article "Leonel Power" in Norwegian language version.
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|isbn=-verdien: invalid character (hjelp). Besøkt 24. februar 2013. «Leonel Power (c. 1375–1445) was one of the two leading composers of English music between 1410 and 1445. The other was John Dunstable.»|isbn=-verdien: invalid character (hjelp).