http://e-repository.perpus.iainsalatiga.ac.id/13702
http://e-repository.perpus.iainsalatiga.ac.id/13919
http://e-repository.perpus.iainsalatiga.ac.id/13906
http://e-repository.perpus.iainsalatiga.ac.id/13912
http://e-repository.perpus.iainsalatiga.ac.id/13883