@book{25751,
	author = {Levin, Jack A.  and Fox, James Alan },
	title = {Elementary statistics in social research essentials},
	publisher = {Pearson},
	year = {2013},
	edition = {3rd ed.},
	url = {https://ebookcentral.proquest.com/lib/curaj/detail.action?docID=5138267}
}