@book{1212,
	author = {BARRET, B. and NICKELS, W. G, McHugh, J. M. & McHugh, S. M.},
	title = {Student Assessment and Learning Guide for Use With Understanding Business },
	publisher = {McGraw-Hill,},
	year = {2002.},
	address = {New York,},
	edition = {6th Ed.}
}