It's easy to cite LitCharts for use in academic papers and reports.
MLA
Seresin, Indiana. "The Underground Railroad." LitCharts. LitCharts LLC, 10 Apr 2017. Web. 6 May 2021.
Chicago
Seresin, Indiana. "The Underground Railroad." LitCharts LLC, April 10, 2017. Retrieved May 6, 2021. https://www.litcharts.com/lit/the-underground-railroad.