O'Brien, J. J. (1965). CPM in construction management: Scheduling by the Critical Path Method. New York: The McGraw-Hill Companies.
Παραπομπή Chicago StyleO'Brien, James J. CPM in Construction Management: Scheduling By the Critical Path Method. New York: The McGraw-Hill Companies, 1965.
Παραπομπή MLAO'Brien, James J. CPM in Construction Management: Scheduling By the Critical Path Method. New York: The McGraw-Hill Companies, 1965.
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