http://e-repository.perpus.iainsalatiga.ac.id/11056
http://e-repository.perpus.iainsalatiga.ac.id/10817
http://e-repository.perpus.iainsalatiga.ac.id/11893
http://e-repository.perpus.iainsalatiga.ac.id/11992
http://e-repository.perpus.iainsalatiga.ac.id/11543