CUMMINGS, M. C. (1981). Democracy Under Pressure An Introduction To The American Political System Milton C. Cummings; David Wise. Harcourt Brace Jovanovich.
Chicago-referens (17:e uppl.)CUMMINGS, Milton C. Democracy Under Pressure An Introduction To The American Political System Milton C. Cummings; David Wise. Harcourt Brace Jovanovich, 1981.
MLA-referens (8:e uppl.)CUMMINGS, Milton C. Democracy Under Pressure An Introduction To The American Political System Milton C. Cummings; David Wise. Harcourt Brace Jovanovich, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.