http://e-repository.perpus.iainsalatiga.ac.id/11738
http://e-repository.perpus.iainsalatiga.ac.id/17215
http://e-repository.perpus.iainsalatiga.ac.id/11911
http://e-repository.perpus.iainsalatiga.ac.id/11914
http://e-repository.perpus.iainsalatiga.ac.id/13336