GOERKE, R. R. (1962). American history and goverment for prospective citizens. WM.C. Brown Book Company.
Chicago-viite (17. p.)GOERKE, Righter R. American History and Goverment for Prospective Citizens. Dubuque: WM.C. Brown Book Company, 1962.
MLA-viite (9. p.)GOERKE, Righter R. American History and Goverment for Prospective Citizens. WM.C. Brown Book Company, 1962.
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