McGerr, M. E. (2005). A fierce discontent: The rise and fall of the Progressive movement in America, 1870-1920. Oxford, Eng. ; New York: Oxford University Press.

McGerr, Michael E. A Fierce Discontent: The Rise and Fall of the Progressive Movement in America, 1870-1920. Oxford, Eng. ; New York: Oxford University Press, 2005.

McGerr, Michael E. A Fierce Discontent: The Rise and Fall of the Progressive Movement in America, 1870-1920. Oxford, Eng. ; New York: Oxford University Press, 2005.