@book{548472,
	author = {Wiest, Jerome D., and Levy, Ferdinand K.,},
	title = {A management guide to PERT/CPM :},
	publisher = {Prentice-Hall,},
	year = {c1977.},
	address = {Englewood Cliffs, N.J. :},
	edition = {2d ed.},
	note = {Includes index.}
}