Litecky, C. R., & Davis, G. B. (1987). Structured COBOL: A step by step approach. McGraw-Hill.
Chicagoスタイル(17版)引用形式Litecky, Charles R., , Gordon Bitter Davis. Structured COBOL: A Step by Step Approach. New York: McGraw-Hill, 1987.
MLA(9版)引用形式Litecky, Charles R., , Gordon Bitter Davis. Structured COBOL: A Step by Step Approach. McGraw-Hill, 1987.
警告: この引用は必ずしも正確ではありません.