Levin, R. I., & Kirkpatrick, C. A. (1966). Planning and control with PERT/CPM. McGraw-Hill ; Tata McGraw-Hill.
Cita Chicago (17th ed.)Levin, Richard I., i Charles Atkinson Kirkpatrick. Planning and Control with PERT/CPM. New York ; New Delhi: McGraw-Hill ; Tata McGraw-Hill, 1966.
Cita MLA (8th ed.)Levin, Richard I., i Charles Atkinson Kirkpatrick. Planning and Control with PERT/CPM. McGraw-Hill ; Tata McGraw-Hill, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.