Grauer, R. T., Buss, A. R., & Vazquez Villar, C. (1998). COBOL: From micro to mainframe : preparing for the new millennium (3rd ed.). Upper Saddle River, N.J.: Prentice Hall.
Dyfyniad Arddull ChicagoGrauer, Robert T., Arthur R. Buss, và Carol Vazquez Villar. COBOL: From Micro to Mainframe : Preparing for the New Millennium. 3rd ed. Upper Saddle River, N.J.: Prentice Hall, 1998.
Dyfyniad MLAGrauer, Robert T., Arthur R. Buss, và Carol Vazquez Villar. COBOL: From Micro to Mainframe : Preparing for the New Millennium. 3rd ed. Upper Saddle River, N.J.: Prentice Hall, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.