Nisak, Siti Choirotun. “Pembentukan Keterampilan Leadership Skill Melalui Organisasi Siswa Intra Sekolah (OSIS) Di Madrasah Tsanawiyah Nahdlatul ‘Ulama Mojosari-Loceret-Nganjuk”. Intelektual: Jurnal Pendidikan Dan Studi Keislaman, vol. 8, no. 3, Dec. 2018, pp. 399-12, https://doi.org/10.33367/intelektual.v8i3.732.