APA (7th ed.) Citation

Friedrich, C. J. (1967). An introduction to political theory: Twelve lectures at Harvard. Harper & Row.

Chicago Style (17th ed.) Citation

Friedrich, Carl J. An Introduction to Political Theory: Twelve Lectures at Harvard. New York u.a: Harper & Row, 1967.

MLA (9th ed.) Citation

Friedrich, Carl J. An Introduction to Political Theory: Twelve Lectures at Harvard. Harper & Row, 1967.