http://e-repository.perpus.iainsalatiga.ac.id/11299
http://e-repository.perpus.iainsalatiga.ac.id/10924
http://e-repository.perpus.iainsalatiga.ac.id/12463
http://e-repository.perpus.iainsalatiga.ac.id/11838
http://e-repository.perpus.iainsalatiga.ac.id/11809