Cita APA (7th ed.)

Stern, N. B., & Stern, R. A. (1994). The Wiley COBOL syntax reference guide: With IBM and VAX enhancements. Wiley.

Cita Chicago (17th ed.)

Stern, Nancy B., i Robert A. Stern. The Wiley COBOL Syntax Reference Guide: With IBM and VAX Enhancements. New York: Wiley, 1994.

Cita MLA (9th ed.)

Stern, Nancy B., i Robert A. Stern. The Wiley COBOL Syntax Reference Guide: With IBM and VAX Enhancements. Wiley, 1994.