It's easy to cite LitCharts for use in academic papers and reports.
MLA
Arn, Jackson. "Mockingjay." LitCharts. LitCharts LLC, 4 Nov 2015. Web. 5 Mar 2021.
Chicago
Arn, Jackson. "Mockingjay." LitCharts LLC, November 4, 2015. Retrieved March 5, 2021. https://www.litcharts.com/lit/mockingjay.