Cita APA (7a ed.)
Stern, N. B., & Stern, R. A. The Wiley COBOL Syntax Reference Guide: With IBM and VAX Enhancements. Wiley.
Cita estilo Chicago (17a ed.)
Stern, Nancy B., y Robert A. Stern. The Wiley COBOL Syntax Reference Guide: With IBM and VAX Enhancements. Nueva York, EUA: Wiley.
Cita MLA (9a ed.)
Stern, Nancy B., y Robert A. Stern. The Wiley COBOL Syntax Reference Guide: With IBM and VAX Enhancements. Wiley.
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