Norman Bridwell. (2011). Clifford's Birthday Party (Clifford 8x8) (Reissue.). Cartwheel Books.
Lua i Stíl Chicago (17ú heag.)Norman Bridwell. Clifford's Birthday Party (Clifford 8x8). Reissue. Cartwheel Books, 2011.
Lua MLA (9ú heag.)Norman Bridwell. Clifford's Birthday Party (Clifford 8x8). Reissue. Cartwheel Books, 2011.
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