Cita APA (7a ed.)

Grauer, R. T. (1985). Structured COBOL programming. Prentice- Hall.

Cita Chicago Style (17a ed.)

Grauer, Robert T. Structured COBOL Programming. New Jersey: Prentice- Hall, 1985.

Cita MLA (9a ed.)

Grauer, Robert T. Structured COBOL Programming. Prentice- Hall, 1985.