APA (7th ed.) Citation

Pitts, G. N., & Bateman, B. L. (1982). Essentials of COBOL programming: A structured approach. Computer Science Press.

Chicago Style (17th ed.) Citation

Pitts, Gerald N., and Barry L. Bateman. Essentials of COBOL Programming: A Structured Approach. Rockville, MD: Computer Science Press, 1982.

MLA (9th ed.) Citation

Pitts, Gerald N., and Barry L. Bateman. Essentials of COBOL Programming: A Structured Approach. Computer Science Press, 1982.