@book{6020,
	author = {Greene, Jennifer, and Stellman, Andrew.},
	title = {Head first PMP /},
	publisher = {O'Reilly,},
	year = {c2014.},
	address = {Beijing ;},
	edition = {3rd ed.},
	note = {"A learner's companion to passing the Project Management Professional exam. Free full-length sample PMP exam inside."--Cover.}
}