Friedman, R. (1991). Problem solving for engineers and scientists: A creative approach. Van Nostrand Reinhold.
芝加哥风格引文Friedman, Raymond. Problem Solving for Engineers and Scientists: A Creative Approach. New York: Van Nostrand Reinhold, 1991.
MLA引文Friedman, Raymond. Problem Solving for Engineers and Scientists: A Creative Approach. Van Nostrand Reinhold, 1991.
警告：这些引文格式不一定是100％准确.