Cook, Ramsay
MacMillan of Canada, 1966
Buku Teks
Simeon, Richard
McGill Queen's University Press, 1977
Buku Teks
Bourinot, John G.
Cambridge University Press, 1909
Buku Teks
Masters, Donald C., author
D. Van Nostrand, 1958
Buku Teks
Creighton, Donald, author
Macmillan, 1957
Buku Teks