http://e-repository.perpus.iainsalatiga.ac.id/8573
http://e-repository.perpus.iainsalatiga.ac.id/8564
http://e-repository.perpus.iainsalatiga.ac.id/8552
http://e-repository.perpus.iainsalatiga.ac.id/8342
http://e-repository.perpus.iainsalatiga.ac.id/8596