MORAIS, P. (2006). THE USEFUL LONG TAIL. KIDDZ BOOKZ.
Lua i Stíl Chicago (17ú heag.)MORAIS, PATRICK. THE USEFUL LONG TAIL. MALAYSIA: KIDDZ BOOKZ, 2006.
Lua MLA (9ú heag.)MORAIS, PATRICK. THE USEFUL LONG TAIL. KIDDZ BOOKZ, 2006.
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