Bluhm, W. T. (1965). Theories of the political system: Classics or political thought and modern political analysis. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Bluhm, William T. Theories of the Political System: Classics or Political Thought and Modern Political Analysis. Englewood Cliffs: Prentice-Hall, 1965.
Lua MLA (9ú heag.)Bluhm, William T. Theories of the Political System: Classics or Political Thought and Modern Political Analysis. Prentice-Hall, 1965.
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