@book{481648,
	author = {Leong, Frederick T. L. and Sage eBooks},
	title = {The psychology research handbook},
	publisher = {SAGE,},
	year = {2006.},
	address = {Thousand Oaks ;},
	edition = {2nd ed.},
	url = {http://ezproxy.alfaisal.edu/login?url=http://sk.sagepub.com/reference/hdbk_psychrsch}
}