http://e-repository.perpus.iainsalatiga.ac.id/16029
http://e-repository.perpus.iainsalatiga.ac.id/16168
http://e-repository.perpus.iainsalatiga.ac.id/16196
http://e-repository.perpus.iainsalatiga.ac.id/16262
http://e-repository.perpus.iainsalatiga.ac.id/16315