USMAN, S. Pemilihan Presiden dan Wakil Presiden secara Langsung. Unisia, [S. l.], n. 51, p. 27–32, 2016. DOI: 10.20885/unisia.vol27.iss51.art4. Disponível em: https://journal.uii.ac.id/Unisia/article/view/5787. Acesso em: 6 may. 2024.