@book{1023,
	author = {HOFFMANN, L.D. and GERALD, L. BRADLEY. & KENNETH, H. ROSEN.},
	title = {Applied Calculus: For Business, Economics, and the Social and Life Sciences.},
	publisher = {Mcgraw- Hill  ,Inc,},
	year = {2000.},
	address = {New York,},
	edition = {8th Ed.}
}