It's easy to cite LitCharts for use in academic papers and reports.
Ginsberg, Jacob. "The Rime of the Ancient Mariner." <em>LitCharts.</em> LitCharts LLC, 26 Nov 2016. Web. 20 Aug 2017.
Ginsberg, Jacob. "<em>The Rime of the Ancient Mariner</em>." LitCharts LLC, November 26, 2016. Retrieved August 20, 2017. http://www.litcharts.com/lit/rime-of-the-ancient-mariner.