Dyfyniad APA

Litecky, C. R., & Davis, G. B. (1987). Structured COBOL: A step by step approach. McGraw-Hill.

Dyfyniad Arddull Chicago

Litecky, Charles R., and Gordon Bitter Davis. Structured COBOL: A Step by Step Approach. New York: McGraw-Hill, 1987.

Dyfyniad MLA

Litecky, Charles R., and Gordon Bitter Davis. Structured COBOL: A Step by Step Approach. McGraw-Hill, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.