It's easy to cite LitCharts for use in academic papers and reports.
Winner, Kathryn. "The Night Thoreau Spent in Jail." <em>LitCharts.</em> LitCharts LLC, 13 Oct 2015. Web. 19 Jan 2017.
Winner, Kathryn. "<em>The Night Thoreau Spent in Jail</em>." LitCharts LLC, October 13, 2015. Retrieved January 19, 2017. http://www.litcharts.com/lit/the-night-thoreau-spent-in-jail.