Patterson, S. C., Davidson, R. H., & Ripley, R. B. (1982). A more perfect union: Introduction to American government (Revised edition.). Dorsey Press.
Cita Chicago (17th ed.)Patterson, Samuel C., Roger H. Davidson, i Randall B. Ripley. A More Perfect Union: Introduction to American Government. Revised edition. Homewood, Illinois: Dorsey Press, 1982.
Cita MLA (9th ed.)Patterson, Samuel C., et al. A More Perfect Union: Introduction to American Government. Revised edition. Dorsey Press, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.