Cita APA

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

Citación estilo Chicago

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

Cita MLA

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