@book{3639,
	author = {Hughes, Phil. and Ferrett, Ed.},
	title = {Introduction to health and safety at work :},
	publisher = {Elsevier,},
	year = {c2011.},
	address = {Oxford :},
	edition = {5th ed.},
	note = {Endorsed by National Examination Board in Occupational Safety and Health (NEBOSH).}
}