http://e-repository.perpus.iainsalatiga.ac.id/18992
http://e-repository.perpus.iainsalatiga.ac.id/18492
http://e-repository.perpus.iainsalatiga.ac.id/18319
http://e-repository.perpus.iainsalatiga.ac.id/18535
http://e-repository.perpus.iainsalatiga.ac.id/18349