@book{201547,
	author = {Welkowitz, Joan. and Cohen, Barry H.},
	title = {Introductory statistics for the behavioral sciences},
	publisher = {Wiley},
	year = {c2006.},
	address = {Hoboken, N.J.},
	edition = {6th ed.},
	note = {Various multi-media instructional resources are available to supplement the text.},
	url = {http://www.loc.gov/catdir/toc/ecip0613/2006013970.html}
}