It's easy to cite LitCharts for use in academic papers and reports.
MLA
Arn, Jackson. "King Leopold’s Ghost." LitCharts. LitCharts LLC, 17 Feb 2017. Web. 6 Jul 2020.
Chicago
Arn, Jackson. "King Leopold’s Ghost." LitCharts LLC, February 17, 2017. Retrieved July 6, 2020. https://www.litcharts.com/lit/king-leopold-s-ghost.