Riggs, J. L. (1982). Essentials of engineering economics. McGraw-Hill.
芝加哥风格引文Riggs, James L. Essentials of Engineering Economics. New York: McGraw-Hill, 1982.
MLA引文Riggs, James L. Essentials of Engineering Economics. McGraw-Hill, 1982.
警告：这些引文格式不一定是100％准确.