Cita APA (7th ed.)

Singh, R. (2003). American government and politics: A concise introduction. SAGE Publications.

Cita Chicago (17th ed.)

Singh, Robert. American Government and Politics: A Concise Introduction. London ; Thousand Oaks, Calif.: SAGE Publications, 2003.

Cita MLA (9th ed.)

Singh, Robert. American Government and Politics: A Concise Introduction. SAGE Publications, 2003.