Microsoft corporation. Microsoft COBOL: Reference manual. BPB.
Chicago-čujuhus (17. p.)Microsoft corporation. Microsoft COBOL: Reference Manual. New Delhi: BPB.
MLA-čujuhus (9. p.)Microsoft corporation. Microsoft COBOL: Reference Manual. BPB.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.