@book{224773,
	author = {Harley, John P.},
	title = {Laboratory exercises in microbiology, seventh edition},
	publisher = {McGraw-Hill/Higher Education},
	year = {c2008.},
	address = {Boston},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0713/2007273168-t.html}
}