@techreport{Hackett2012,
author = {Hackett, C. and Grim, B.J. and Stonawski, M. and Skirbekk, V. and Potančoková, M. and Abel, G.},
title= {The global religious landscape: A report on the size and distribution of the world's major religious groups as of 2010},
year = {2012},
publisher = {Pew Research Center},
address = {Washington, DC},
}