Cita APA (7a ed.)
Borchert, J. R. (1987). America's northern heartland. University of Minnesota Press.
Cita Chicago Style (17a ed.)
Borchert, John R. America's Northern Heartland. Minneapolis: University of Minnesota Press, 1987.
Cita MLA (9a ed.)
Borchert, John R. America's Northern Heartland. University of Minnesota Press, 1987.
Precaución: Estas citas no son 100% exactas.