Canadian regions : a geography of Canada
edited by Donald F. Putnam
J.M. Dent & Sons, 1957
 Buku Teks SO
Dodd, Lawrence C., 1946-
Coalitions in parliamentary government
Princenton University Press, 1976
 Buku Teks SO
Bailey, Sydney D.
Parliamentary government in Southern Asia
Institute of pacific relations, 1953
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Laski, Harold J.
Parliamentary government in England : a commentary
George Allen and Unwin, 1952
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Crisp, L.F. [Leslie Finlay]
The parliamentary government of the Commonwealth of Australia
Yale University Press, 1949
 Buku Teks SO