http://e-repository.perpus.iainsalatiga.ac.id/12354
http://e-repository.perpus.iainsalatiga.ac.id/12988
http://e-repository.perpus.iainsalatiga.ac.id/12923
http://e-repository.perpus.iainsalatiga.ac.id/13027
http://e-repository.perpus.iainsalatiga.ac.id/13445