Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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