Cita APA (7a ed.)

Sin autor & International Business Machines Corporation - IBM. (1978). IBM VS COBOL for OS/VS (2nd ed.). IBM Corporation.

Cita Chicago Style (17a ed.)

Sin autor y International Business Machines Corporation - IBM. IBM VS COBOL for OS/VS. 2nd ed. San Jose: IBM Corporation, 1978.

Cita MLA (9a ed.)

Sin autor y International Business Machines Corporation - IBM. IBM VS COBOL for OS/VS. 2nd ed. IBM Corporation, 1978.