It's easy to cite LitCharts for use in academic papers and reports.
MLA
Sobel, Ben. "Atonement." LitCharts. LitCharts LLC, 11 Aug 2014. Web. 5 Jul 2020.
Chicago
Sobel, Ben. "Atonement." LitCharts LLC, August 11, 2014. Retrieved July 5, 2020. https://www.litcharts.com/lit/atonement.