Ludwig, R. (1996). A manufacturing CEO's secret tips for improving profit. John Willey & Sons.
芝加哥风格引文Ludwig, Richard. A Manufacturing CEO's Secret Tips for Improving Profit. New York: John Willey & Sons, 1996.
MLA引文Ludwig, Richard. A Manufacturing CEO's Secret Tips for Improving Profit. John Willey & Sons, 1996.
警告：这些引文格式不一定是100％准确.