http://e-repository.perpus.iainsalatiga.ac.id/12786
http://e-repository.perpus.iainsalatiga.ac.id/12770
http://e-repository.perpus.iainsalatiga.ac.id/13196
http://e-repository.perpus.iainsalatiga.ac.id/13018
http://e-repository.perpus.iainsalatiga.ac.id/12953