Cita APA (7a ed.)

McCalla, R. (1985). Structured Cobol programming and data -: Processing methods. Brooks/Cole.

Cita Chicago Style (17a ed.)

McCalla, Richard. Structured Cobol Programming and Data -: Processing Methods. Monterey, Calif.: Brooks/Cole, 1985.

Cita MLA (9a ed.)

McCalla, Richard. Structured Cobol Programming and Data -: Processing Methods. Brooks/Cole, 1985.