Watkins, F. M. (1964). The age of ideology-political thought, 1750: To the present. Prentice-Hall.
Citace podle Chicago (17th ed.)Watkins, Frederick M. The Age of Ideology-political Thought, 1750: To the Present. Englewood Cliffs, N.J.: Prentice-Hall, 1964.
Citace podle MLA (9th ed.)Watkins, Frederick M. The Age of Ideology-political Thought, 1750: To the Present. Prentice-Hall, 1964.
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