How do I cite a source with multiple authors in Chicago style?

In a Chicago style footnote, list up to three authors. If there are more than three, name only the first author, followed by “et al.

In the bibliography, list up to ten authors. If there are more than ten, list the first seven followed by “et al.”

Full noteShort noteBibliography
2 authorsAnna Burns and Robert SmithBurns and SmithBurns, Anna, and Robert Smith.
3 authorsAnna Burns, Robert Smith, and Judith GreenBurns, Smith, and GreenBurns, Anna, Robert Smith, and Judith Green.
4+ authorsAnna Burns et al.Burns et al.Burns, Anna, Robert Smith, Judith Green, and Maggie White.

The same rules apply in Chicago author-date style.