Cornwell, N., & Littlewood, K. (2006). Christophe's story. Pearson Education.
Lua i Stíl Chicago (17ú heag.)Cornwell, Nicki, agus Karin Littlewood. Christophe's Story. Edinburgh Gate Essex: Pearson Education, 2006.
Lua MLA (9ú heag.)Cornwell, Nicki, agus Karin Littlewood. Christophe's Story. Pearson Education, 2006.
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