Proctor, George A.
University of Toronto Press, 1980
Buku Teks
McDougall, J. Lorne
McGill University Press, 1968
Buku Teks
Brown, Craig
Carswell, 1995
Buku Teks
Buchanan, Donald W., author
The Phaiden Press , 1945
Buku Referensi
Hurtig Pub., 1980
Buku Teks