Funston, Bernard W., author
Carswell, 1994
Buku Teks
Barron, Jerome A., author
West, 2009
Buku Teks
Gerin-Lajoie, Paul, author
University of Toronto Press, 1950
Buku Teks
Gellhorn, Ernest, author
West , 1994
Buku Teks
Dobbyn, John F., author
West Publishing, 1989
Buku Teks