Blank, W. (1995). The 9 natural laws of leadership. AMACOM; VIVA Books Private Ltd..
芝加哥风格引文Blank, Warren. The 9 Natural Laws of Leadership. New York; New Delhi: AMACOM; VIVA Books Private Ltd., 1995.
MLA引文Blank, Warren. The 9 Natural Laws of Leadership. AMACOM; VIVA Books Private Ltd., 1995.
警告：这些引文格式不一定是100％准确.