D. Wiest, J., & K. Levy, F. (1977). A Manangement Guide to PERT/CPM (2nd ed.). PHI Learning.
Chicago Style (17th ed.) ZitazioaD. Wiest, Jerome, eta Ferdinand K. Levy. A Manangement Guide to PERT/CPM. 2nd ed. New Delhi, India: PHI Learning, 1977.
MLA (9th ed.) ZitazioaD. Wiest, Jerome, eta Ferdinand K. Levy. A Manangement Guide to PERT/CPM. 2nd ed. PHI Learning, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.