Allen, J., & Stegmeir, C. (1960). Civics (Fifty-State ed.). American Book Co.
Lua i Stíl Chicago (17ú heag.)Allen, Jack, agus Clarence Stegmeir. Civics. Fifty-State ed. [New York]: American Book Co, 1960.
Lua MLA (8ú heag.)Allen, Jack, agus Clarence Stegmeir. Civics. Fifty-State ed. American Book Co, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.