Cita APA (7th ed.)

Bernstein, R. A. (1992). An introduction to political science methods (3rd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Bernstein, Robert A. An Introduction to Political Science Methods. 3rd ed. Englewood Cliffs: Prentice Hall, 1992.

Cita MLA (9th ed.)

Bernstein, Robert A. An Introduction to Political Science Methods. 3rd ed. Prentice Hall, 1992.