Lower, Arthur R.M.
Longmans, Green and Company, 1959
Buku Teks
Lower, Arthur R.M.
The Ryerson Press, 1952
Buku Teks
McInnis, Edgar
Clarke Irwin, 1956
Buku Teks
McInnis, Edgar
Holt, Rinehart and Winston of Canada, 1982
Buku Teks
Siegel, Arthur
McGraw-Hill Ryerson, 1983
Buku Teks