Barnett, J. D. (1915). The operation of the initiative, referendum and recall in Oregon. Macmillan Company.
Lua i Stíl Chicago (17ú heag.)Barnett, James D. The Operation of the Initiative, Referendum and Recall in Oregon. New York: Macmillan Company, 1915.
Lua MLA (8ú heag.)Barnett, James D. The Operation of the Initiative, Referendum and Recall in Oregon. Macmillan Company, 1915.
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