McAllister, M. I. (2006). Urchin and the heartstone. Bloomsbury.
Lua i Stíl Chicago (17ú heag.)McAllister, M. I. Urchin and the Heartstone. London: Bloomsbury, 2006.
Lua MLA (8ú heag.)McAllister, M. I. Urchin and the Heartstone. Bloomsbury, 2006.
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