It's easy to cite LitCharts for use in academic papers and reports.
MLA
Saviano, Andrew. "Walden." LitCharts. LitCharts LLC, 15 Sep 2013. Web. 13 Jul 2020.
Chicago
Saviano, Andrew. "Walden." LitCharts LLC, September 15, 2013. Retrieved July 13, 2020. https://www.litcharts.com/lit/walden.