Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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