For information on using Chicago style to cite sources both in-text and on the Works Cited page of a research paper, consult the printed manual. The latest edition is the 17th (2017).
The Chicago Manual of Style, 17e (2017) by 
A Manual for Writers of Research Papers, Theses, and Dissertations, 9e (2018) by Reference list for author-date style: not needed--cite in text only.
In-text CMOS author-date style example: (ChatGPT, March 7, 2023).