@book{44756,
	author = {Leffler, William L.},
	title = {Petroleum refining in nontechnical language /},
	publisher = {Pennwell,},
	year = {c2008},
	address = {Tulsa, Okla. :},
	edition = {4th ed.},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/toc/ecip0820/2008026094.html}
}