Clifford F Gray. Project Management The Managerial Process 6Ed. Tata McGraw Hill.
Chicago Style (17. basım) AtıfClifford F Gray. Project Management The Managerial Process 6Ed. Tata McGraw Hill.
MLA (9th ed.) AtıfClifford F Gray. Project Management The Managerial Process 6Ed. Tata McGraw Hill.
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