Watkins, F. M. (1964). The age of ideology-political thought, 1750: To the present. Prentice-Hall.
Citazione stile Chigago Style (17a edizione)Watkins, Frederick M. The Age of Ideology-political Thought, 1750: To the Present. Englewood Cliffs, N.J.: Prentice-Hall, 1964.
Citatione MLA (9a ed.)Watkins, Frederick M. The Age of Ideology-political Thought, 1750: To the Present. Prentice-Hall, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.