@book{175577,
	author = {Bluttman, Ken,},
	title = {Excel Formulas & Functions /},
	publisher = {John Wiley & Sons, Inc.,},
	year = {2019.  },
	series = {For dummies },
	address = {Hoboken, New Jersey :},
	edition = {5th edition. },
	note = {Includes index.}
}