(PDF)存档于2013年9月2日). Thale, Geoff. Background Info. on the Upcoming Elections in El Salvador. WashingtonOfficeonLatinAmerica. 29 Jan 2014 [2014-04-29]. (原始内容存档于2016-04-04)
(页面存档备份,存于互联网档案馆), April 2006 Center for Economic and Policy Research "Peru Elections Near: A Look at the Candidates", June 1, 2011 WashingtonOfficeonLatinAmerica
families of America north of Mexico. Seventh annual report, Bureau of American Ethnology (pp. 1–142). Washington, D.C.: Government Printing Office. (Reprinted