Cita APA (7a ed.)

Horn, L. W. (1995). Comprehensive structured COBOL (3rd.ed.). CTI.

Cita Chicago Style (17a ed.)

Horn, L. Wayne. Comprehensive Structured COBOL. 3rd.ed. Cambridge: CTI, 1995.

Cita MLA (9a ed.)

Horn, L. Wayne. Comprehensive Structured COBOL. 3rd.ed. CTI, 1995.