GRAUER, R. T. (1991). Cobol: From micro to mainframe volume II. Prentice Hall.
芝加哥风格引文GRAUER, Robert T. Cobol: From Micro to Mainframe Volume II. London: Prentice Hall, 1991.
MLA引文GRAUER, Robert T. Cobol: From Micro to Mainframe Volume II. Prentice Hall, 1991.
警告：这些引文格式不一定是100％准确.