GRAUER, R. T. (1983). Structured methods through cobol. Prentice-Hall.
芝加哥风格引文GRAUER, Robert T. Structured Methods Through Cobol. New Jersey: Prentice-Hall, 1983.
MLA引文GRAUER, Robert T. Structured Methods Through Cobol. Prentice-Hall, 1983.
警告：这些引文格式不一定是100％准确.