Sin autor & International Business Machines Corporation - IBM. (1976). OS/VS1 JCL Services: Release 6 (4th ed.). [S.n.].
Cita Chicago Style (17a ed.)Sin autor y International Business Machines Corporation - IBM. OS/VS1 JCL Services: Release 6. 4th ed. Nueva York: [S.n.], 1976.
Cita MLA (9a ed.)Sin autor y International Business Machines Corporation - IBM. OS/VS1 JCL Services: Release 6. 4th ed. [S.n.], 1976.
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