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Lua i Stíl Chicago (17ú heag.)SPILSBURY RICHARD. LET'S ROCK CRYSTALS. 2011 Ed. MINNESOTA: CAPSTONE PRESS, 2019.
Lua MLA (9ú heag.)SPILSBURY RICHARD. LET'S ROCK CRYSTALS. 2011 Ed. CAPSTONE PRESS, 2019.
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