Tanghe, Raymond
Montreal Fides 1957,
Buku Teks
Farjat, Gerard
Editions Frison, 1999
Buku Teks
Anderson, Roger V.
Comm Royale D'Enquete sur Les , 1957
Buku Teks
Manzer, Ronald A., author
McGraw-Hill Ryerson, 1974
Buku Teks
McInnis, Edgar
Holt, Rinehart and Winston of Canada, 1982
Buku Teks