Polacco, P. (2011). Bun Bun Button. G. P. Putnam's Sons.
Lua i Stíl Chicago (17ú heag.)Polacco, Patricia. Bun Bun Button. New York: G. P. Putnam's Sons, 2011.
Lua MLA (8ú heag.)Polacco, Patricia. Bun Bun Button. G. P. Putnam's Sons, 2011.
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