http://e-repository.perpus.iainsalatiga.ac.id/10787
http://e-repository.perpus.iainsalatiga.ac.id/11455
http://e-repository.perpus.iainsalatiga.ac.id/11448
http://e-repository.perpus.iainsalatiga.ac.id/11403
http://e-repository.perpus.iainsalatiga.ac.id/11093