http://e-repository.perpus.iainsalatiga.ac.id/19487
http://e-repository.perpus.iainsalatiga.ac.id/19043
http://e-repository.perpus.iainsalatiga.ac.id/19629
http://e-repository.perpus.iainsalatiga.ac.id/19356
http://e-repository.perpus.iainsalatiga.ac.id/19368