O'Donnell, M., & Vickers, G. R. e. S. El Salvador elections 1994: Voter registration progress and the tasks ahead. Hemisphere Initiatives.
Chicagoスタイル(17版)引用形式O'Donnell, Madelene, , George R ed. Spence Vickers. El Salvador Elections 1994: Voter Registration Progress and the Tasks Ahead. Cambridge: Hemisphere Initiatives.
MLA(9版)引用形式O'Donnell, Madelene, , George R ed. Spence Vickers. El Salvador Elections 1994: Voter Registration Progress and the Tasks Ahead. Hemisphere Initiatives.
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