http://e-repository.perpus.iainsalatiga.ac.id/16207
http://e-repository.perpus.iainsalatiga.ac.id/16489
http://e-repository.perpus.iainsalatiga.ac.id/15985
http://e-repository.perpus.iainsalatiga.ac.id/15901
http://e-repository.perpus.iainsalatiga.ac.id/15899