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Lua i Stíl Chicago (17ú heag.)Wagner, Fritz. "Johann Gottfried Herder E Petraca: Fritz Wagner." Quaderni Petrarcheschi (1).(1983) .
Lua MLA (8ú heag.)Wagner, Fritz. "Johann Gottfried Herder E Petraca: Fritz Wagner." Quaderni Petrarcheschi (1).(1983), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.