Cita APA (7a ed.)

Litecky, C. (1987). Structural cobol. Mc Graw Hill.

Cita Chicago Style (17a ed.)

Litecky, C. Structural Cobol. New York: Mc Graw Hill, 1987.

Cita MLA (9a ed.)

Litecky, C. Structural Cobol. Mc Graw Hill, 1987.