CUMMINGS, M. C., & David Wise [joint Author]. (1981). Democracy under pressure: An introduction to the American political system (4th ed.). Harcourt Brace Jovanovich.
Chicago-čujuhus (17. p.)CUMMINGS, Milton C., juo David Wise [joint Author]. Democracy Under Pressure: An Introduction to the American Political System. 4th ed. New York: Harcourt Brace Jovanovich, 1981.
MLA-čujuhus (9. p.)CUMMINGS, Milton C., juo David Wise [joint Author]. Democracy Under Pressure: An Introduction to the American Political System. 4th ed. Harcourt Brace Jovanovich, 1981.
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