@book{80166,
	author = {Kidder, Louse H and Judd, Charles M},
	title = {Research methods in social relations. -- 6th ed.},
	publisher = {Holt, Rinehart and Winston},
	year = {1991},
	address = {Chicago:},
	edition = {6th ed.},
	note = {48 copies in School of Business Department}
}