Irwin, R. (1985). Wealth builders: Six get rich quick strategies that really work. Franklin Watts.
芝加哥风格引文Irwin, Robert. Wealth Builders: Six Get Rich Quick Strategies That Really Work. New York: Franklin Watts, 1985.
MLA引文Irwin, Robert. Wealth Builders: Six Get Rich Quick Strategies That Really Work. Franklin Watts, 1985.
警告：这些引文格式不一定是100％准确.