(1977). Advanced ANS COBOL with structured programming / Gary D. Brown.
Citazione stile Chigago Style (17a edizione)Advanced ANS COBOL with Structured Programming / Gary D. Brown. 1977.
Citatione MLA (9a ed.)Advanced ANS COBOL with Structured Programming / Gary D. Brown. 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.