McCalla, R. (1985). Structured COBOL programming and data-processing methods. Brooks/Cole Pub Co.
Cita Chicago Style (17a ed.)McCalla, Richard. Structured COBOL Programming and Data-processing Methods. Monterey, Calif: Brooks/Cole Pub Co, 1985.
Cita MLA (9a ed.)McCalla, Richard. Structured COBOL Programming and Data-processing Methods. Brooks/Cole Pub Co, 1985.
Precaución: Estas citas no son 100% exactas.