http://e-repository.perpus.iainsalatiga.ac.id/16097
http://e-repository.perpus.iainsalatiga.ac.id/16489
http://e-repository.perpus.iainsalatiga.ac.id/16094
http://e-repository.perpus.iainsalatiga.ac.id/15899
http://e-repository.perpus.iainsalatiga.ac.id/13200