http://e-repository.perpus.iainsalatiga.ac.id/18855
http://e-repository.perpus.iainsalatiga.ac.id/17380
http://e-repository.perpus.iainsalatiga.ac.id/17372
http://e-repository.perpus.iainsalatiga.ac.id/13257
http://e-repository.perpus.iainsalatiga.ac.id/12527