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Horace Walpole, John Wright, George Agar-Ellis Dover (1st baron) (1840). “The letters of Horace Walpole, Earl of Orford: including numerous letters now first published from the original manuscripts”, p.272
Francis Asbury (1821). “The Journal of the Rev. Francis Asbury, Bishop of the Methodist Episcopal Church: From August 7, 1771, to December 7, 1815”, p.231
"Tori Amos: I'd start the day with three dozen oysters then a rare steak. I felt powerful on stage'". Interview with John Hind, www.theguardian.com. October 15, 2011.
"Comparing “Heaven is for Real” with “God’s Not Dead” + an interview with “Heaven” writer/director Randall Wallace". Interview with John W. Kennedy, www.beliefnet.com.