Hollingworth, H. L. (1949). Psychology and ethics: A study of sense of obligation. Ronald Press.
芝加哥风格引文Hollingworth, Harry Levi. Psychology and Ethics: A Study of Sense of Obligation. New York: Ronald Press, 1949.
MLA引文Hollingworth, Harry Levi. Psychology and Ethics: A Study of Sense of Obligation. Ronald Press, 1949.
警告：这些引文格式不一定是100％准确.