Covey, S. R. (2004). The seven habits of highly effective people ([2nd ed.].). Pocket Books.
芝加哥风格引文Covey, Stephen R. The Seven Habits of Highly Effective People. [2nd ed.]. London: Pocket Books, 2004.
MLA引文Covey, Stephen R. The Seven Habits of Highly Effective People. [2nd ed.]. Pocket Books, 2004.
警告：这些引文格式不一定是100％准确.