APA-referens (7:e uppl.)

Hughes, R. O. (1923). A text-book in citizenship: Community civics, economic civics, vocational civics. Allyn and Bacon.

Chicago-referens (17:e uppl.)

Hughes, R. O. A Text-book in Citizenship: Community Civics, Economic Civics, Vocational Civics. Boston: Allyn and Bacon, 1923.

MLA-referens (8:e uppl.)

Hughes, R. O. A Text-book in Citizenship: Community Civics, Economic Civics, Vocational Civics. Allyn and Bacon, 1923.