APA (7th ed.) Citation

Bonno, J. A., & Fields, K. T. (1982). Introduction to COBOL. Business Publications.

Chicago Style (17th ed.) Citation

Bonno, John A., and Kent T. Fields. Introduction to COBOL. Texas: Business Publications, 1982.

MLA (9th ed.) Citation

Bonno, John A., and Kent T. Fields. Introduction to COBOL. Business Publications, 1982.