APA (7th ed.) Citation

Overbeek, R. A., & Singletary, W. E. (1986). Introduction to COBOL: A primer and programming guide. Addison-Wesley Pub. Co..

Chicago Style (17th ed.) Citation

Overbeek, Ross A., and Wilson E. Singletary. Introduction to COBOL: A Primer and Programming Guide. Reading, Mass.: Addison-Wesley Pub. Co., 1986.

MLA (9th ed.) Citation

Overbeek, Ross A., and Wilson E. Singletary. Introduction to COBOL: A Primer and Programming Guide. Addison-Wesley Pub. Co., 1986.