Dyfyniad APA

Stern, N. B., & Stern, R. A. (1997). Structured COBOL programming (8th ed.). Wiley.

Dyfyniad Arddull Chicago

Stern, Nancy B., and Robert A. Stern. Structured COBOL Programming. 8th ed. New York: Wiley, 1997.

Dyfyniad MLA

Stern, Nancy B., and Robert A. Stern. Structured COBOL Programming. 8th ed. Wiley, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.