It's easy to cite LitCharts for use in academic papers and reports.
MLA
Lee, Sophia. "A Study in Scarlet." LitCharts. LitCharts LLC, 17 Apr 2017. Web. 18 Jan 2021.
Chicago
Lee, Sophia. "A Study in Scarlet." LitCharts LLC, April 17, 2017. Retrieved January 18, 2021. https://www.litcharts.com/lit/a-study-in-scarlet.