George Carlin (2015). “3 x Carlin: An Orgy of George including Brain Droppings, Napalm and Silly Putty, and When Will Jesus Bring the Pork Chops?”, p.573, Hachette UK
Pope Francis' Message to The Executive Chairman of The World Economic Forum on The Occasion of The Annual Meeting at Davos-Klosters, Switzerland, w2.vatican.va. January 17, 2014.