EDWARDS, P. (1986). Cobol: A systems and structured approach. Burgess Communications.
芝加哥风格引文EDWARDS, Perry. Cobol: A Systems and Structured Approach. Minnesota: Burgess Communications, 1986.
MLA引文EDWARDS, Perry. Cobol: A Systems and Structured Approach. Burgess Communications, 1986.
警告：这些引文格式不一定是100％准确.