Gaya APA

Cummings, ., Wise, . (1989). Democracy Under Pressure An Introduction to the American Political System . New York: Harcourt Brace Jovanovich.

Gaya MLA

Cummings, ., Wise, . "Democracy Under Pressure An Introduction to the American Political System". New York: Harcourt Brace Jovanovich, 1989. Text.