http://e-repository.perpus.iainsalatiga.ac.id/10587
http://e-repository.perpus.iainsalatiga.ac.id/10653
http://e-repository.perpus.iainsalatiga.ac.id/13609
http://e-repository.perpus.iainsalatiga.ac.id/13276
http://e-repository.perpus.iainsalatiga.ac.id/11302