Kroeker, Irvin
Manitoba
Whitecap Books, 1979
 Buku Teks SO
Morton, W.L.
Manitoba; a history
University of Toronto Press, 1979
 Buku Teks SO
Sweezy, Paul M. (Paul Marlor), 1910-2004
Socialism
McGraw-Hill, 1949
 Buku Teks SO
Sweezy, Paul M. (Paul Marlor), 1910-2004
Socialism
McGraw-Hill, 1949
 Buku Teks SO
Banfield, Edward C.
Government project/ Edward C. Banfield
Free Press, 1951
 Buku Teks SO