It's easy to cite LitCharts for use in academic papers and reports.
MLA
Frisella, Emily. "The Martian." LitCharts. LitCharts LLC, 1 Mar 2017. Web. 20 Sep 2020.
Chicago
Frisella, Emily. "The Martian." LitCharts LLC, March 1, 2017. Retrieved September 20, 2020. https://www.litcharts.com/lit/the-martian.