APA (7th ed.) Citation

Stern, N. B., & Stern, R. A. (1991). Structured COBOL programming (6th ed.). John Wiley.

Chicago Style (17th ed.) Citation

Stern, Nancy B., and Robert A. Stern. Structured COBOL Programming. 6th ed. New York: John Wiley, 1991.

MLA (9th ed.) Citation

Stern, Nancy B., and Robert A. Stern. Structured COBOL Programming. 6th ed. John Wiley, 1991.

Warning: These citations may not always be 100% accurate.