It's easy to cite LitCharts for use in academic papers and reports.
MLA
Mueller, Bethany. "Out of the Silent Planet." LitCharts. LitCharts LLC, 23 Jul 2017. Web. 5 Jul 2020.
Chicago
Mueller, Bethany. "Out of the Silent Planet." LitCharts LLC, July 23, 2017. Retrieved July 5, 2020. https://www.litcharts.com/lit/out-of-the-silent-planet.