Wallace, W. Stewart
The dictionary of Canadian biography
Macmillan, 1945
 Buku Referensi
Wallacem W. Stewart
The dictionary of Canadian biography
Macmillan, 1945
 Buku Teks SO
Compact dictionary of Canadian English
edited by Thomas M. Paikeday
Holt, Rinehart and Winston, 1976
 Buku Referensi
The Economist : dictionary of political biography
Economist Books, 1991
 Buku Referensi
Dictionary of American biography
Charles Scribner's Sons , 1981
 Buku Referensi