这些来源以一定的引用格式和下列已建好的风格被列出，如MLA(现代语言联合会)，APA(美国心理联合会)或芝加哥时尚指南。

These sources are listed in citation format and follow an established style, such as MLA (Modern Language Association), APA (American Psychological Association) or Chicago Manual of style.

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请参看最新版《芝加哥文章格式手册》。

Please follow the latest edition of the Chicago Manual of Style.

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