It's easy to cite LitCharts for use in academic papers and reports.
MLA
Lucas, Julian. "Candide." LitCharts. LitCharts LLC, 16 Sep 2013. Web. 8 Jul 2020.
Chicago
Lucas, Julian. "Candide." LitCharts LLC, September 16, 2013. Retrieved July 8, 2020. https://www.litcharts.com/lit/candide.