Stuart J. Murphy. (2005). Hamster Champs (MathStart 3). HarperCollins.
Lua i Stíl Chicago (17ú heag.)Stuart J. Murphy. Hamster Champs (MathStart 3). HarperCollins, 2005.
Lua MLA (9ú heag.)Stuart J. Murphy. Hamster Champs (MathStart 3). HarperCollins, 2005.
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