It's easy to cite LitCharts for use in academic papers and reports.
Carey, Patrick. "I Know Why the Caged Bird Sings." <em>LitCharts.</em> LitCharts LLC, 5 Dec 2016. Web. 18 Aug 2017.
Carey, Patrick. "<em>I Know Why the Caged Bird Sings</em>." LitCharts LLC, December 5, 2016. Retrieved August 18, 2017. http://www.litcharts.com/lit/i-know-why-the-caged-bird-sings.