Robert Green Ingersoll (1920). “Ingersoll: Fifty Great Selections, Lectures, Tributes, After Dinner Speeches and Essays, Carefully Selected from the Twelve Volume Dresden Edition of Colonel Ingersoll's Complete Works”
"Santorum Mocks Gay Marriage: ‘I Love My Brother. Should We Call This Relationship Marriage Too?’". Santorum's Philadelphia Inquirer column, thinkprogress.org. May 22, 2008.