LITECKY, C. R. (1987). Structured cobola step by step approach. McGraw Hill.
Cita Chicago Style (17a ed.)LITECKY, Charles R. Structured Cobola Step by Step Approach. McGraw Hill, 1987.
Cita MLA (8a ed.)LITECKY, Charles R. Structured Cobola Step by Step Approach. McGraw Hill, 1987.
Precaución: Estas citas no son 100% exactas.