@book{56551,
	author = {B.C. Punmia and K.K.Khandelwal},
	title = {Project planning and control with PERT and CPM},
	publisher = {K.K.Khandelwal},
	year = {2015},
	address = {New Delhi},
	edition = {4},
	note = {Quantity Number:  1}
}