EDWARDS, P. (1986). Cobol: A systems and structured approach. Burgess Communications.
Citazione stile Chigago Style (17a edizione)EDWARDS, Perry. Cobol: A Systems and Structured Approach. Minnesota: Burgess Communications, 1986.
Citatione MLA (9a ed.)EDWARDS, Perry. Cobol: A Systems and Structured Approach. Burgess Communications, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.