Cita APA (7a ed.)

BONNO, J. A. (1982). Introduction to COBOL. Business Publications.

Cita Chicago Style (17a ed.)

BONNO, John A. Introduction to COBOL. Plano, Tex.: Business Publications, 1982.

Cita MLA (9a ed.)

BONNO, John A. Introduction to COBOL. Business Publications, 1982.