"A Primer on Environmental Decision-Making: An Integrative Quantitative Approach". Book by Knut Lehre Seip, Fred Wenstop, Springer Science & Business Media, p. 184, 2006.
"Burwell v. Hobby Lobby Stores, Inc., 573 U.S. ___". The U.S. Supreme Court case (Samuel Alito's opinion for the Court), supreme.justia.com. June 30, 2014.