Tohutoro APA (7th ed.)
Beatrice, L. (2007). Zero. Baldini Castoldi Dalai.
Tohutoru Kātū Chicago (17th ed.)
Beatrice, Luca. Zero. Milano: Baldini Castoldi Dalai, 2007.
Tohutoro MLA (9th ed.)
Beatrice, Luca. Zero. Baldini Castoldi Dalai, 2007.
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