@book{21008,
	author = {Beal, Edwin Fletcher. and Wickersham, Edward D.},
	title = {The practice of collective bargaining},
	publisher = {R. D. Irwin},
	year = {1972.},
	series = {The Irwin series in economics},
	address = {Homewood, Ill.},
	edition = {4th ed.}
}