Burns, J. M. (1963). The deadlock of democracy: Four party politics in America. Prentice-Hall.
Cita Chicago (17th ed.)Burns, James MacGregor. The Deadlock of Democracy: Four Party Politics in America. Englewood Cliffs, N.J: Prentice-Hall, 1963.
Cita MLA (9th ed.)Burns, James MacGregor. The Deadlock of Democracy: Four Party Politics in America. Prentice-Hall, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.