Cita APA (7a ed.)
Stern, N., & Stern, R. A. (1997). Structured cobol programming (7th ed.). John Wiley.
Cita Chicago Style (17a ed.)
Stern, Nancy, y Robert A. Stern. Structured Cobol Programming. 7th ed. New York: John Wiley, 1997.
Cita MLA (9a ed.)
Stern, Nancy, y Robert A. Stern. Structured Cobol Programming. 7th ed. John Wiley, 1997.
Precaución: Estas citas no son 100% exactas.