CLELAND, D. I., & KOCAOGLU, D. F. (1981). Engineering management. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)CLELAND, David I., agus Dundar F. KOCAOGLU. Engineering Management. Auckland: McGraw-Hill, 1981.
Lua MLA (9ú heag.)CLELAND, David I., agus Dundar F. KOCAOGLU. Engineering Management. McGraw-Hill, 1981.
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