Stern, N., & Stern, R. A. (1988). Structured COBOL programming (5th ed.). National Bookstore.
Chicago Style (17th ed.) CitationStern, Nancy, and Robert A. Stern. Structured COBOL Programming. 5th ed. Manila: National Bookstore, 1988.
MLA (9th ed.) CitationStern, Nancy, and Robert A. Stern. Structured COBOL Programming. 5th ed. National Bookstore, 1988.
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