http://e-repository.perpus.iainsalatiga.ac.id/13339
http://e-repository.perpus.iainsalatiga.ac.id/12253
http://e-repository.perpus.iainsalatiga.ac.id/14087
http://e-repository.perpus.iainsalatiga.ac.id/14150
http://e-repository.perpus.iainsalatiga.ac.id/13905