http://e-repository.perpus.iainsalatiga.ac.id/14360
http://e-repository.perpus.iainsalatiga.ac.id/13903
http://e-repository.perpus.iainsalatiga.ac.id/14846
http://e-repository.perpus.iainsalatiga.ac.id/17466
http://e-repository.perpus.iainsalatiga.ac.id/17066