Hughes, R. O. (1923). A text-book in citizenship: Community civics, economic civics, vocational civics. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Hughes, R. O. A Text-book in Citizenship: Community Civics, Economic Civics, Vocational Civics. Boston: Allyn and Bacon, 1923.
Lua MLA (8ú heag.)Hughes, R. O. A Text-book in Citizenship: Community Civics, Economic Civics, Vocational Civics. Allyn and Bacon, 1923.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.