Friedrich, C. J. (1967). Introduction to Political theory: Twelve Lectures at Harvard. Jaico.
Chicago Edition CitationFriedrich, Carl J. Introduction to Political Theory: Twelve Lectures at Harvard. Bombay: Jaico, 1967.
MLA引文Friedrich, Carl J. Introduction to Political Theory: Twelve Lectures at Harvard. Jaico, 1967.
警告：這些引文格式不一定是100％准確.