Cita APA (7a ed.)

Litecky, C. R. (1987). Structured cobol: A step by step approach. McGraw-Hill.

Cita Chicago Style (17a ed.)

Litecky, Charles R. Structured Cobol: A Step by Step Approach. New York: McGraw-Hill, 1987.

Cita MLA (9a ed.)

Litecky, Charles R. Structured Cobol: A Step by Step Approach. McGraw-Hill, 1987.