APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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