Lyons, N. R. (1980). Structured COBOL for data processing: Glencoe series in computer science and data processing. Glencoe Pub Co.
Cita Chicago (17th ed.)Lyons, Norman R. Structured COBOL for Data Processing: Glencoe Series in Computer Science and Data Processing. Encino, Calif: Glencoe Pub Co, 1980.
Cita MLA (9th ed.)Lyons, Norman R. Structured COBOL for Data Processing: Glencoe Series in Computer Science and Data Processing. Glencoe Pub Co, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.