Morlan, R. L. (1955). Political prairie fire: The Nonpartisan League, 1915-1922. University of Minnesota Press.
Chicago-viite (17. p.)Morlan, Robert Loren. Political Prairie Fire: The Nonpartisan League, 1915-1922. Minneapolis: University of Minnesota Press, 1955.
MLA-viite (9. p.)Morlan, Robert Loren. Political Prairie Fire: The Nonpartisan League, 1915-1922. University of Minnesota Press, 1955.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.