Covey Stephen R. (2004). 7 Habits of highly effective people. Pocket Books.
芝加哥风格引文Covey Stephen R. 7 Habits of Highly Effective People. London: Pocket Books, 2004.
MLA引文Covey Stephen R. 7 Habits of Highly Effective People. Pocket Books, 2004.
警告：这些引文格式不一定是100％准确.