Microsoft. (1959). Cobol compiler. IBM.
Cita Chicago (17th ed.)Microsoft. Cobol Compiler. [S.l.]: IBM, 1959.
Cita MLA (9th ed.)Microsoft. Cobol Compiler. IBM, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.
Microsoft. (1959). Cobol compiler. IBM.
Cita Chicago (17th ed.)Microsoft. Cobol Compiler. [S.l.]: IBM, 1959.
Cita MLA (9th ed.)Microsoft. Cobol Compiler. IBM, 1959.