APA (7th ed.) Citation

Stern, N., & Stern, R. A. (1988). Structured COBOL programming (5th ed.). National Bookstore.

Chicago Style (17th ed.) Citation

Stern, Nancy, and Robert A. Stern. Structured COBOL Programming. 5th ed. Manila: National Bookstore, 1988.

MLA (9th ed.) Citation

Stern, Nancy, and Robert A. Stern. Structured COBOL Programming. 5th ed. National Bookstore, 1988.