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