Hittinger, R. (1987). A critique of the new natural law theory. Revisions.
芝加哥风格引文Hittinger, Russell. "A Critique of the New Natural Law Theory." Revisions 1987.
MLA引文Hittinger, Russell. "A Critique of the New Natural Law Theory." Revisions, 1987.
警告：这些引文格式不一定是100％准确.