Cita APA (7th ed.)

O'Neil, P. H. (2012). Essentials of comparative politics (4th edition.). W. W. Norton and Co.

Cita Chicago (17th ed.)

O'Neil, Patrick H. Essentials of Comparative Politics. 4th edition. New York: W. W. Norton and Co, 2012.

Cita MLA (9th ed.)

O'Neil, Patrick H. Essentials of Comparative Politics. 4th edition. W. W. Norton and Co, 2012.