Rosyad, Ilyas, Sari Narulita, and Andy Hadiyanto. 2015. “Upaya Optimalisasi Kinerja Pegawai Melalui Penerapan Nilai-Nilai Spiritualitas Islam”. Jurnal Studi Al-Qur’an 11 (2), 145 -56. https://doi.org/10.21009/JSQ.011.2.04.