[외국도서] Studyguide for Democracy Under Pressure: An Introduction to the American Political System, by Cummings, Milton C., ISBN 9780495502135 (Paperback) - An Introduction to the American Political System
[외국도서] Democracy Under Pressure: An Introduction to the American Political System: 2006 Election Update (Hardcover, 10) - An Introduction to the American Political System, 2006 Election Update
