http://e-repository.perpus.iainsalatiga.ac.id/15123
http://e-repository.perpus.iainsalatiga.ac.id/14857
http://e-repository.perpus.iainsalatiga.ac.id/14856
http://e-repository.perpus.iainsalatiga.ac.id/15124
http://e-repository.perpus.iainsalatiga.ac.id/14853