Learn: Popular Education and Guerrilla War inElSalvador, Rutgers University Press 1998 Knight, Charles, ed (1867). “Republic of San Salvador”. Geography
^ See Ethnologue (2005) The figures for Honduras are dated 1993, for ElSalvador, 1987. ^ World Directory of Minorities and Indigenous Peoples - Honduras :
American Linguistics 1:9-44. ^ Lyle Campbell. 1985. The Pipil language of El Salvador. Mouton grammar library No. 1. Berlin: Mouton Publishers. ^ Fray Alonso