APA-čujuhus (7. p.)
Singh, R. (2003). American government and politics: A concise introduction. SAGE Publications.
Chicago-čujuhus (17. p.)
Singh, Robert. American Government and Politics: A Concise Introduction. London ; Thousand Oaks, Calif.: SAGE Publications, 2003.
MLA-čujuhus (9. p.)
Singh, Robert. American Government and Politics: A Concise Introduction. SAGE Publications, 2003.
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