Barber, J. D. (1969). Citizen politics: An introduction to political behavior. Markham Pub. Co.
Chicago-viite (17. p.)Barber, James David. Citizen Politics: An Introduction to Political Behavior. Chicago: Markham Pub. Co, 1969.
MLA-viite (9. p.)Barber, James David. Citizen Politics: An Introduction to Political Behavior. Markham Pub. Co, 1969.
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