Pigford, D., & .Baur, G. R. (1990). Expert systems for business: Concepts and applications : featuring VP-Expert. Boyd & Fraser Pub. Co..
芝加哥风格引文Pigford, Darleen, 与 Gregory R. .Baur. Expert Systems for Business: Concepts and Applications : Featuring VP-Expert. Boston: Boyd & Fraser Pub. Co., 1990.
MLA引文Pigford, Darleen, 与 Gregory R. .Baur. Expert Systems for Business: Concepts and Applications : Featuring VP-Expert. Boyd & Fraser Pub. Co., 1990.
警告：这些引文格式不一定是100％准确.