Wiest J. D., . (1994). A Management Guide To PERY /CPM. New Delhi: Prentice-Hall of India.
Wiest Jerome D, . 1994. A Management Guide To PERY /CPM. New Delhi: Prentice-Hall of India.
Wiest Jerome D, . A Management Guide To PERY /CPM. New Delhi: Prentice-Hall of India. 1994.