Wallace, W. Stewart
The dictionary of Canadian biography
Macmillan, 1945
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Dictionary of Canadian Biography
[publisher not identified], [date of publication not identified]
 Buku Teks
Compact dictionary of Canadian English
edited by Thomas M. Paikeday
Holt, Rinehart and Winston, 1976
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The Economist : dictionary of political biography
Economist Books, 1991
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Dictionary of American biography
Charles Scribner's Sons , 1981
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