WINKER, H. &. O. (2008). HANK ZIPZER THE WORLD'S GREATEST UNDERACHIEVER: I GOT A ''D'' IN SALAMI. WALKER BOOKS.
Lua i Stíl Chicago (17ú heag.)WINKER, HENRY & OUVER. HANK ZIPZER THE WORLD'S GREATEST UNDERACHIEVER: I GOT A ''D'' IN SALAMI. LONDON: WALKER BOOKS, 2008.
Lua MLA (9ú heag.)WINKER, HENRY & OUVER. HANK ZIPZER THE WORLD'S GREATEST UNDERACHIEVER: I GOT A ''D'' IN SALAMI. WALKER BOOKS, 2008.
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