FAUZI, Akhmad. Analysis of the Effectiveness of Using Contractual Sentences (Sighat) in Islamic Marriages in Indonesia: John Langshaw Austin’s Speech Act Theory Perspective. J-CEKI : Jurnal Cendekia Ilmiah, [S. l.], v. 4, n. 5, p. 1275–1286, 2025. DOI: 10.56799/jceki.v4i5.11053. Disponível em: https://al-haramjournal.id/J-CEKI/article/view/11053. Acesso em: 27 jul. 2026.