記錄引文
APA引文
Porto Editora & Bloco Gráfico. (1999). Sistema Solar. Porto Editora.
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Chicago Style (17th ed.) Citation
Porto Editora and Bloco Gráfico. Sistema Solar. Porto Editora, 1999.
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MLA引文
Porto Editora and Bloco Gráfico. Sistema Solar. Porto Editora, 1999.
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警告：這些引文格式不一定是100％准確.