APA (7e ed.) Bronvermelding

EDWARDS, P. (1986). Cobol: A systems and structured approach. Burgess Communications.

Chicago (17e ed.) Bronvermelding

EDWARDS, Perry. Cobol: A Systems and Structured Approach. Minnesota: Burgess Communications, 1986.

MLA (9e ed.) Bronvermelding

EDWARDS, Perry. Cobol: A Systems and Structured Approach. Burgess Communications, 1986.

Let op: Deze citaties zijn niet altijd 100% accuraat.