APA (7th ed.) Zitazioa

Walstrom, J. A. J. (1985). Advanced structured cobol. Macmillan.

Chicago Style (17th ed.) Zitazioa

Walstrom, John A. J. Advanced Structured Cobol. New York: Macmillan, 1985.

MLA (9th ed.) Zitazioa

Walstrom, John A. J. Advanced Structured Cobol. Macmillan, 1985.