It's easy to cite LitCharts for use in academic papers and reports.
Mueller, Bethany. "The Brief Wondrous Life of Oscar Wao." <em>LitCharts.</em> LitCharts LLC, 14 Dec 2016. Web. 19 Jan 2017.
Mueller, Bethany. "<em>The Brief Wondrous Life of Oscar Wao</em>." LitCharts LLC, December 14, 2016. Retrieved January 19, 2017. http://www.litcharts.com/lit/the-brief-wondrous-life-of-oscar-wao.