It's easy to cite LitCharts for use in academic papers and reports.
MLA
Canavan, Michael. "Murder on the Orient Express." LitCharts. LitCharts LLC, 13 Oct 2018. Web. 19 Sep 2021.
Chicago
Canavan, Michael. "Murder on the Orient Express." LitCharts LLC, October 13, 2018. Retrieved September 19, 2021. https://www.litcharts.com/lit/murder-on-the-orient-express.