@book{171801,
	author = {Bluttman, Ken. and ebrary, Inc.},
	title = {Excel formulas and functions for dummies},
	publisher = {John Wiley & Sons, Inc.,},
	year = {2013.},
	address = {Indianapolis, Ind. :},
	edition = {3rd ed.},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10662575}
}