GOERKE, R. R. (1962). American history and goverment for prospective citizens. WM.C. Brown Book Company.
Lua i Stíl Chicago (17ú heag.)GOERKE, Righter R. American History and Goverment for Prospective Citizens. Dubuque: WM.C. Brown Book Company, 1962.
Lua MLA (9ú heag.)GOERKE, Righter R. American History and Goverment for Prospective Citizens. WM.C. Brown Book Company, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.