@book{38489,
	author = {White, Emily, and Armstrong, B. K.},
	title = {Principles of exposure measurement in epidemiology},
	publisher = {Oxford University Press,},
	year = {2008.},
	address = {Oxford :},
	edition = {2nd ed.},
	note = {Previous ed.: published as by Bruce Armstrong, Emily White, Rodolfo Saracci. 1992.},
	url = {http://dx.doi.org/10.1093/acprof:oso/9780198509851.001.0001}
}