@book{3120,
	author = {BARNETT, R. A. and ZIEGLER,  M.  R. &  BYLEEN, K.  E.},
	title = {Applied Mathematics : for  Business, Economics, Life  Sciences, and Social Sciences},
	publisher = {Prentice Hall,},
	year = {2003},
	address = {New Jersey,},
	edition = {8th Ed.}
}