Barber, J. D. (1972). Citizen politics: An introduction to political behavior (2a. ed.). Ladder Edition.
Lua i Stíl Chicago (17ú heag.)Barber, James David. Citizen Politics: An Introduction to Political Behavior. 2a. ed. s.l: Ladder Edition, 1972.
Lua MLA (9ú heag.)Barber, James David. Citizen Politics: An Introduction to Political Behavior. 2a. ed. Ladder Edition, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.