@book{49871,
	author = {Davis, Stephen F. and Smith, Randolph A.},
	title = {An introduction to statistics and research methods :},
	publisher = {Pearson/Prentice Hall,},
	year = {c2005},
	address = {Upper Saddle River, NJ :},
	edition = {1st ed.},
	note = {Includes bibliographical references (p. 599-603) and index}
}