It's easy to cite LitCharts for use in academic papers and reports.
MLA
Marcuson, Tim. "Best Seller." LitCharts. LitCharts LLC, 20 Oct 2018. Web. 24 Jun 2021.
Chicago
Marcuson, Tim. "Best Seller." LitCharts LLC, October 20, 2018. Retrieved June 24, 2021. https://www.litcharts.com/lit/best-seller.