http://e-repository.perpus.iainsalatiga.ac.id/12146
http://e-repository.perpus.iainsalatiga.ac.id/12225
http://e-repository.perpus.iainsalatiga.ac.id/12072
http://e-repository.perpus.iainsalatiga.ac.id/12228
http://e-repository.perpus.iainsalatiga.ac.id/11455