COURTENAY L A. SPACE PENGUINS: METEOR MADNESS (2013.). PARRAGON BOOKS PUBLISHING HOUSE.
Lua i Stíl Chicago (17ú heag.)COURTENAY L A. SPACE PENGUINS: METEOR MADNESS. 2013. MINNESOTA: PARRAGON BOOKS PUBLISHING HOUSE.
Lua MLA (9ú heag.)COURTENAY L A. SPACE PENGUINS: METEOR MADNESS. 2013. PARRAGON BOOKS PUBLISHING HOUSE.
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