D. Wiest, J., & K. Levy, F. (1977). A Manangement Guide to PERT/CPM (2nd ed.). PHI Learning.
Cita Chicago (17th ed.)D. Wiest, Jerome, i Ferdinand K. Levy. A Manangement Guide to PERT/CPM. 2nd ed. New Delhi, India: PHI Learning, 1977.
Cita MLA (9th ed.)D. Wiest, Jerome, i Ferdinand K. Levy. A Manangement Guide to PERT/CPM. 2nd ed. PHI Learning, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.