Cita APA (7a ed.)
Litecky, C. R., & Davis, G. B. (1987). Structured COBOL: A step by step approach. McGraw-Hill.
Cita Chicago Style (17a ed.)
Litecky, Charles R., y Gordon Bitter Davis. Structured COBOL: A Step by Step Approach. New York: McGraw-Hill, 1987.
Cita MLA (9a ed.)
Litecky, Charles R., y Gordon Bitter Davis. Structured COBOL: A Step by Step Approach. McGraw-Hill, 1987.
Precaución: Estas citas no son 100% exactas.