Keefe, W. J., & Ogul, M. S. (1993). The American legislative process: Congress and the States (8th ed.). Prentice Hall.
Cita Chicago (17th ed.)Keefe, William J., i Morris S. Ogul. The American Legislative Process: Congress and the States. 8th ed. Englewood Cliffs, NJ: Prentice Hall, 1993.
Cita MLA (9th ed.)Keefe, William J., i Morris S. Ogul. The American Legislative Process: Congress and the States. 8th ed. Prentice Hall, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.