McCrocklin, J. H., & Hughes, R. O. (1964). Building citizenship. Allyn & Bacon.
Lua i Stíl Chicago (17ú heag.)McCrocklin, James H., agus R. O. Hughes. Building Citizenship. Boston: Allyn & Bacon, 1964.
Lua MLA (8ú heag.)McCrocklin, James H., agus R. O. Hughes. Building Citizenship. Allyn & Bacon, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.