http://e-repository.perpus.iainsalatiga.ac.id/17598
http://e-repository.perpus.iainsalatiga.ac.id/17544
http://e-repository.perpus.iainsalatiga.ac.id/15955
http://e-repository.perpus.iainsalatiga.ac.id/13694
http://e-repository.perpus.iainsalatiga.ac.id/14948