Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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