Charles Hodge (1855). “What is Presbyterianism?: An Address Delivered Before the Presbyterian Historical Society at Their Anniversary Meeting in Philadelphia, on Tuesday Evening, May 1, 1855”, p.66
Sir Humphry Davy, John Davy (1839). “The Collected Works of Sir Humphry Davy, Bart. ...: Memoirs of the life of Sir Humphry Davy, by his brother, John Davy”, p.150
"Ellen Page: 'I'm totally pro-choice. I mean what are we going to do - go back to clothes hangers?'". Interview With Lisa O'Kelly, www.theguardian.com. April 3, 2010.
"Next generation browser: Pure open source software development comes of age". Interview with Dana Greenlee, www.tacomadailyindex.com. September 10, 2004.