@techreport{Lopez2013,
author = {Lopez, M.H. and Gonzalez-Barrera, A. and Cuddington, D.},
title= {Diverse origins: The nation’s 14 largest Hispanic-origin groups},
year = {2013},
URL = {http://www.pewhispanic.org/files/2013/06/summary_report_final.pdf},
publisher = {PEW Research Center},
address = {Washington},
}