http://e-repository.perpus.iainsalatiga.ac.id/11738
http://e-repository.perpus.iainsalatiga.ac.id/13440
http://e-repository.perpus.iainsalatiga.ac.id/17629
http://e-repository.perpus.iainsalatiga.ac.id/17676
http://e-repository.perpus.iainsalatiga.ac.id/17706