Charlotte Bronte, Emily Bronte, Anne Bronte (2009). “The Bronte Sisters: Three Novels: Jane Eyre; Wuthering Heights; and Agnes Grey (Penguin Classics Deluxe Edition)”, p.311, Penguin
George Herbert (1853). “The poetical works of George Herbert [and The synagogue, by C. Harvey.]. With life, critical diss., and notes, by G. Gilfillan”, p.316
"Robertson Treatment Syndicated Column (RTSC): A Conversation With Civil Rights Attorney BBenjamin Crump". Interview with Gil Robertson, www.eurweb.com. March 24, 2015.