OPTNER STANFORD L. (1977). SYSTEMS ANALYSIS FOR BUSINESS MANAGEMENT (3.). PRENTICE -HALL INTERNATIONAL, INC.
Chicago-čujuhus (17. p.)OPTNER STANFORD L. SYSTEMS ANALYSIS FOR BUSINESS MANAGEMENT. 3. NEW JERSEY,USA: PRENTICE -HALL INTERNATIONAL, INC, 1977.
MLA-čujuhus (9. p.)OPTNER STANFORD L. SYSTEMS ANALYSIS FOR BUSINESS MANAGEMENT. 3. PRENTICE -HALL INTERNATIONAL, INC, 1977.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.