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. 24 Jan 2021.
Chicago
Arn, Jackson. "King Leopold’s Ghost." LitCharts LLC, February 17, 2017. Retrieved January 24, 2021. https://www.litcharts.com/lit/king-leopold-s-ghost.