Le Bourdais, Donat Marc
Nation of the North; Canada since confederation / Le Bourdais, Donat Marc
Praeger Publishers, 1953
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Braeman, John
American politics in the twentieth century
Thomas Y. Crowill, 1969
 Buku Teks SO
Ideology and politics in twentieth century China
edited by King-yuh Chang
Institute of International Relations, National Chengchi University, 1988
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Manzer, Ronald A.
Canada
McGraw-Hill Ryerson, 1974
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Fenton, Terry
Modern painting in Canada: a survey of major movements in twentieth century Canadian art / Terry Fenton, Karen Wilkin; an exhibition organized by the Edmonton Art Gallery
Edmonton Art Gallery, 1978
 Buku Teks