It's easy to cite LitCharts for use in academic papers and reports.
MLA
Grimm, Alexandra. "Sarah’s Key." LitCharts. LitCharts LLC, 16 Jan 2018. Web. 22 Sep 2020.
Chicago
Grimm, Alexandra. "Sarah’s Key." LitCharts LLC, January 16, 2018. Retrieved September 22, 2020. https://www.litcharts.com/lit/sarah-s-key.