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Lua i Stíl Chicago (17ú heag.)CASSIDY, Jack... [et al]. Turn A Corner Jack Cassidy, Doris Roetteger, Karen K. Wixson. Scirbner educational Publisers, 1987.
Lua MLA (8ú heag.)CASSIDY, Jack... [et al]. Turn A Corner Jack Cassidy, Doris Roetteger, Karen K. Wixson. Scirbner educational Publisers, 1987.
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