http://e-repository.perpus.iainsalatiga.ac.id/17125
http://e-repository.perpus.iainsalatiga.ac.id/17778
http://e-repository.perpus.iainsalatiga.ac.id/17793
http://e-repository.perpus.iainsalatiga.ac.id/12250
http://e-repository.perpus.iainsalatiga.ac.id/17445
http://e-repository.perpus.iainsalatiga.ac.id/17381