O'Donnell, M., & Vickers, G. R. e. S. El Salvador elections 1994: Voter registration progress and the tasks ahead. Hemisphere Initiatives.
Lua i Stíl Chicago (17ú heag.)O'Donnell, Madelene, agus George R ed. Spence Vickers. El Salvador Elections 1994: Voter Registration Progress and the Tasks Ahead. Cambridge: Hemisphere Initiatives.
Lua MLA (9ú heag.)O'Donnell, Madelene, agus George R ed. Spence Vickers. El Salvador Elections 1994: Voter Registration Progress and the Tasks Ahead. Hemisphere Initiatives.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.