http://e-repository.perpus.iainsalatiga.ac.id/15056
http://e-repository.perpus.iainsalatiga.ac.id/15257
http://e-repository.perpus.iainsalatiga.ac.id/15194
http://e-repository.perpus.iainsalatiga.ac.id/15009
http://e-repository.perpus.iainsalatiga.ac.id/14807