APA (7 ম সংস্করণ) উদ্ধৃতি

O'Donnell, M., & Vickers, G. R. e. S. El Salvador elections 1994: Voter registration progress and the tasks ahead. Hemisphere Initiatives.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

O'Donnell, Madelene, এবং George R ed. Spence Vickers. El Salvador Elections 1994: Voter Registration Progress and the Tasks Ahead. Cambridge: Hemisphere Initiatives.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

O'Donnell, Madelene, এবং George R ed. Spence Vickers. El Salvador Elections 1994: Voter Registration Progress and the Tasks Ahead. Hemisphere Initiatives.