Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Pitts, Gerald N., y Barry L. Bateman. Essentials of Cobol Programming: A Structured Approach. Rockville, Maryland: Computer Science, 1982.

Cita MLA (9a ed.)

Pitts, Gerald N., y Barry L. Bateman. Essentials of Cobol Programming: A Structured Approach. Computer Science, 1982.