Citation, Documentation of Sources

Q. When citing multiple sources in one sentence, would you create multiple footnotes separated by commas at the end of the sentence? Or is there a way to combine sources in one footnote?

A. Some styles allow for more than one note reference at a time, like this.1,2 But in Chicago style, you should use only one note reference at a time, like this.1 When a single note needs to cite multiple sources, the sources are usually separated in the note by semicolons. For more information, including examples, see CMOS 14.28 and 14.57.