found:National Catholic reporter website, viewed July 8, 2015Vatican confirms title of environmental encyclical (Laudato si'; title is a quotation from a popular prayer of Saint Francis of Assisi written about 1224; the prayer was written in Umbrian instead of Latin)
found:Catholic news service, viewed July 8, 2015(Pope's encyclical to have medieval Italian title, not Latin (Laudato si'; the encyclical will not be released with a Latin title; earlier reporters had used the modern "sii" for the phrase; the official spelling is the same as that in the prayer by Saint Francis)
found:International business times, viewed July 8, 2015Pope Francis climate change encyclical (written in "plain, everyday Italian" instead of Latin; title is from a work of St. Francis of Assisi written about 1224 in Umbrian)