CLELAND, D. I., & KING, W. R. (1987). Systems analysis and project management.-- Ed.3. McGraw-Hill Boook.
Chicago-čujuhus (17. p.)CLELAND, David I., juo William R. KING. Systems Analysis and Project Management.-- Ed.3. Auckland: McGraw-Hill Boook, 1987.
MLA-čujuhus (9. p.)CLELAND, David I., juo William R. KING. Systems Analysis and Project Management.-- Ed.3. McGraw-Hill Boook, 1987.
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