@book{69196,
	author = {Gladstone, John. and Humphreys, Kenneth King. and American Association of Cost Engineers.},
	title = {Mechanical estimating guidebook for building construction.},
	publisher = {McGraw-Hill,},
	year = {c1987.},
	address = {New York :},
	edition = {5th ed. /},
	note = {"Sponsored by the American Association of Cost Engineers."}
}