Nelson, P. (1996). The prairie winnows out its own: The West River Country of South Dakota in the years of depression and dust. University of Iowa Press.
Dyfyniad Arddull ChicagoNelson, Paula. The Prairie Winnows Out Its Own: The West River Country of South Dakota in the Years of Depression and Dust. Iowa City: University of Iowa Press, 1996.
Dyfyniad MLANelson, Paula. The Prairie Winnows Out Its Own: The West River Country of South Dakota in the Years of Depression and Dust. University of Iowa Press, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.