University of Nebraska--Lincoln. Center for Great Plains Studies. (1991). Great Plains research. Center for Great Plains Studies, University of Nebraska.
Chicago-referens (17:e uppl.)University of Nebraska--Lincoln. Center for Great Plains Studies. Great Plains Research. Lincoln, NE: Center for Great Plains Studies, University of Nebraska, 1991.
MLA-referens (8:e uppl.)University of Nebraska--Lincoln. Center for Great Plains Studies. Great Plains Research. Center for Great Plains Studies, University of Nebraska, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.