Mutiah, R. . “ANALISIS KUALITAS BUTIR SOAL UJIAN SEKOLAH MATA PELAJARAN IPA DI SD N 1 LODANKULON”. Al-Kamal: Jurnal Kajian Islam, vol. 3, no. 2, Dec. 2023, pp. 127-40, https://ejournal.staika.ac.id/index.php/alkamal/article/view/74.