@book{137691,
	author = {Hoffmann, Laurence D.,  and Hoffmann, Laurence D., },
	title = {Calculus for business, economics, and the social, and life sciences},
	publisher = {McGraw-Hill},
	year = {c1986.},
	address = {New York},
	edition = {3rd ed.},
	note = {Rev. ed. of: Calculus for the social, managerial, and life sciences. 2nd ed. c1980.}
}